Fixing Steam Deck dual boot after installing Windows 11 24H2 update

I rarely boot into Windows 11 on my Steam Deck so each boot often comes with a slew of Windows updates to install. Yesterday’s update was no different and brought the Windows 11 24H2 update along. Everything worked fine post-update when running Windows but Steam OS would no longer boot: I was presented with a Steam Deck logo on startup and then the boot process would freeze.