* replace simple Container(w & h) with SizedBox

* address review comments

* address review comments

This fixes the initial value of FocusManager.highlightMode so that it gets initialized correctly on desktop platforms.

My recent update of this code (#52990) broke things so that the highlight mode never changed from the initial default of touch, which meant that focus highlights didn't show unless you set FocusManager.highlightStrategy to something (even automatic, the default: setting it caused the mode to be updated).

This reverts commit ce92333b.

Parser would earlier alternate after finding the first
begin event, not it looks for pairs.

Fixes: https://github.com/flutter/flutter/issues/54095

This reverts commit 13052b10.

This reverts commit 656f4d12.

* remove PackageMap

* Update flutter_web_platform.dart

* Generate methods using template resources if they do not exist in other locales

* Added a flag to either output of messages that have not been translated with detail into a file, or display a summary on the terminal.

* Add integration test for fallback message usage