Describe the bug

If you try to enter a debug expression when the debugger is not running, you get UnimplementedError, with a big ugly stacktrace. Probably only the error message itself should be shown.

UnimplementedError: Global evaluation not currently supported without a Dart script context
#0      DartDebugAdapter.evaluateRequest (package:dds/src/dap/adapters/dart.dart:980:7)
#1      BaseDebugAdapter.handle (package:dds/src/dap/base_debug_adapter.dart:141:20)
#2      BaseDebugAdapter.handleIncomingRequest (package:dds/src/dap/base_debug_adapter.dart:460:7)
#3      BaseDebugAdapter._handleIncomingMessage (package:dds/src/dap/base_debug_adapter.dart:301:7)
#4      ByteStreamServerChannel._readMessage (package:dds/src/dap/protocol_stream.dart:82:18)
#5      ByteStreamServerChannel.listen.<anonymous closure> (package:dds/src/dap/protocol_stream.dart:53:24)
#6      _rootRunUnary (dart:async/zone.dart:1407:47)
#7      _CustomZone.runUnary (dart:async/zone.dart:1308:19)
#8      _CustomZone.runUnaryGuarded (dart:async/zone.dart:1217:7)
#9      _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:339:11)
#10     _DelayedData.perform (dart:async/stream_impl.dart:515:14)
#11     _PendingEvents.handleNext (dart:async/stream_impl.dart:620:11)
#12     _PendingEvents.schedule.<anonymous closure> (dart:async/stream_impl.dart:591:7)
#13     _rootRun (dart:async/zone.dart:1391:47)
#14     _CustomZone.run (dart:async/zone.dart:1301:19)
#15     _CustomZone.runGuarded (dart:async/zone.dart:1209:7)
#16     _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1249:23)
#17     _rootRun (dart:async/zone.dart:1399:13)
#18     _CustomZone.run (dart:async/zone.dart:1301:19)
#19     _CustomZone.runGuarded (dart:async/zone.dart:1209:7)
#20     _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1249:23)
#21     _microtaskLoop (dart:async/schedule_microtask.dart:40:21)
#22     _startMicrotaskLoop (dart:async/schedule_microtask.dart:49:5)
#23     _runPendingImmediateCallback (dart:isolate-patch/isolate_patch.dart:118:13)
#24     _RawReceivePort._handleMessage (dart:isolate-patch/isolate_patch.dart:185:5)

To Reproduce
Steps to reproduce the behavior:

Type something into the debug console's input line when the debugger is not running

Workspace Environment

Dart Code extension: 3.79.20231206
Flutter extension: 3.79.20231130 (activated)
App: Visual Studio Code
App Host: desktop
Version: linux 1.85.1
Workspace type: Dart, Flutter (LSP) (Multiroot)
Dart (3.3.0-174.3.beta): /opt/flutter/bin/cache/dart-sdk
Flutter (3.18.0-0.2.pre): /opt/flutter (Chrome (web-javascript/web))

Output from 'dart info'

/opt/flutter/bin/cache/dart-sdk/bin/dart info

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below to ensure it only contains things you're comfortable posting publicly.

General info

Dart 3.3.0-174.3.beta (beta) (Tue Dec 12 14:49:22 2023 +0000) on "linux_x64"
on linux / Linux 6.5.12-300.fc39.x86_64 Code already includes yaml support, doesn't need providing #1 SMP PREEMPT_DYNAMIC Mon Nov 20 22:44:24 UTC 2023
locale is en_US.utf8

Project info

sdk constraint: '>=3.1.5 <4.0.0'
dependencies: auto_size_text, boxy, cached_network_image, carousel_slider, collection, cross_file, cupertino_icons, device_info_plus, email_validator, exif, extended_image, flutter, flutter_cache_manager, flutter_email_sender, flutter_fgbg, flutter_image_utilities, flutter_localizations, flutter_persistent_value_notifier, flutter_svg, fluttericon, fluttertoast, geocoding, geolocator, getwidget, google_fonts, google_mlkit_face_detection, http, image_picker, intl, jiffy, line_awesome_flutter, logging, material_dialogs, package_info_plus, path_provider, persistent_bottom_nav_bar_v2, provider, random_string, share_plus, shared_preferences, url_launcher
dev_dependencies: flutter_launcher_icons, flutter_lints, flutter_test, lints
elided dependencies: 11

Process info

Memory	CPU	Elapsed time	Command line
522 MB	0.0%	06:01:35	dart --enable-vm-service=0 --pause_isolates_on_start --disable-dart-dev -DSILENT_VM_SERVICE=true --write-service-info=file:/vm.json --pause_isolates_on_exit --enable-asserts /main.dart
687 MB	1.1%	47:50	dart ../serverpod_cli.dart generate --watch
673 MB	7.1%	07:00	dart ../serverpod_cli.dart generate --watch
75 MB	0.0%	06:01:35	dart debug_adapter
60 MB	0.0%	10:12:55	dart devtools --machine --allow-embedding
59 MB	0.0%	10:12:48	dart devtools --machine --allow-embedding
2172 MB	2.7%	10:12:55	dart language-server --protocol=lsp --client-id=VS-Code --client-version=3.79.20231206
1533 MB	0.3%	10:12:48	dart language-server --protocol=lsp --client-id=VS-Code --client-version=3.79.20231206
91 MB	0.0%	10:12:55	flutter_tools.snapshot daemon
90 MB	0.0%	10:12:48	flutter_tools.snapshot daemon

Output from 'flutter doctor'

/opt/flutter/bin/flutter doctor -v

[✓] Flutter (Channel beta, 3.18.0-0.2.pre, on Fedora Linux 39 (Workstation Edition) 6.5.12-300.fc39.x86_64, locale en_US.utf8)
    • Flutter version 3.18.0-0.2.pre on channel beta at /opt/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision fed06b31d9 (3 days ago), 2023-12-13 14:53:33 -0800
    • Engine revision 39c6dc9bdd
    • Dart version 3.3.0 (build 3.3.0-174.3.beta)
    • DevTools version 2.30.0
[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.1)
    • Android SDK at /home/luke/Android/Sdk
    • Platform android-34, build-tools 33.0.1
    • Java binary at: /opt/android-studio/jbr/bin/java
    • Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b802.4-9586694)
    • All Android licenses accepted.
[✓] Chrome - develop for the web
    • Chrome at google-chrome
[✓] Linux toolchain - develop for Linux desktop
    • clang version 17.0.4 (Fedora 17.0.4-1.fc39)
    • cmake version 3.27.7
    • ninja version 1.11.1
    • pkg-config version 1.9.5
[✓] Android Studio (version 2022.2)
    • Android Studio at /opt/android-studio
    • Flutter plugin version 73.0.2
    • Dart plugin version 222.4582
    • Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b802.4-9586694)
[✓] VS Code (version 1.85.1)
    • VS Code at /usr/share/code
    • Flutter extension version 3.79.20231130
[✓] VS Code (version 1.86.0-insider)
    • VS Code at /usr/share/code-insiders
    • Flutter extension version 3.79.20231130
[✓] Connected device (3 available)
    • sdk gphone x86 64 (mobile) • emulator-5554 • android-x64    • Android 13 (API 33) (emulator)
    • Linux (desktop)            • linux         • linux-x64      • Fedora Linux 39 (Workstation Edition) 6.5.12-300.fc39.x86_64
    • Chrome (web)               • chrome        • web-javascript • Google Chrome 119.0.6045.159
[✓] Network resources
    • All expected network resources are available.
• No issues found!