v0.1.2 of jaspr_hooks

React-style lifecycle and state hooks for native Jaspr components. Changelog excerpt: - Fixed signed-zero change detection in `useOptimistic`and `useExternalStore`while continuing to treat `NaN`snapshots as equal. - Updated the Jaspr test, builder, example, and documentation toolchain to 0.23.4 and raised the compatible web compiler baseline to 4.8.0. - Changed pub.dev releases from tag-triggered…