Re-enable Gold post-submit fail state by @Piinks in https://github.com/flutter/flutter/pull/101528

Ensure that the engine frame callbacks are installed if the first scheduled frame is a forced frame by @jason-simmons in https://github.com/flutter/flutter/pull/101544

Enable strict-casts (as replacement for implicit-casts) by @goderbauer in https://github.com/flutter/flutter/pull/101567

Update key examples to use Focus widgets instead of RawKeyboardListener by @gspencergoog in https://github.com/flutter/flutter/pull/101537

Enable unnecessary_import by @goderbauer in https://github.com/flutter/flutter/pull/101600

Correct word in AppBar’s docs by @guillempuche in https://github.com/flutter/flutter/pull/100893