Microsoft has been fixing Windows 11's annoying white flash bug in File Explorer for over 2 years

The latest Windows 11 preview build mentions a fix for File Explorer that should stop it from flash banging you in dark mode.
TechRepublic

Microsoft’s New Windows 11 Update Fixes File Explorer’s Annoying ‘White Flash’

Microsoft’s Windows 11 Insider Preview Build 26220.7961 for 25H2 fixes File Explorer flashes, adds voice typing for renaming, and restores Administrator Protection. Microsoft has rolled out Windows 11 ...