[flutter_tools] boolArg refactor by @amanv8060 in https://github.com/flutter/flutter/pull/102088

[flutter_tools] pub roll by @christopherfujino in https://github.com/flutter/flutter/pull/103220

Provide flutter sdk kernel files to dwds launcher instead of dart ones by @annagrin in https://github.com/flutter/flutter/pull/103436

Add tests for migrate command methods by @GaryQian in https://github.com/flutter/flutter/pull/103466

tools web Make Plugin Registrant file ephemeral. by @ditman in https://github.com/flutter/flutter/pull/102185

[gen_l10n] Better blank lines in the header of generated files by @AlexV525 in https://github.com/flutter/flutter/pull/103414