Use `curly_braces_in_flow_control_structures` for `foundation`, `gestures`, `painting`, `physics` (#104610)

* Use `curly_braces_in_flow_control_structures` for `foundation`

* Use `curly_braces_in_flow_control_structures` for `gestures`

* Use `curly_braces_in_flow_control_structures` for `painting`

* Use `curly_braces_in_flow_control_structures` for `physics`

* fix comments

* remove trailing space

* fix TODO style

* migrates lib/foundation and lib/widgets

* migrates lib/painting and lib/material

* migrates lib/cupertino, lib/gestures, lib/services, lib/semantics and lib/rendering

* fixes failing tests

* migrates test/

* improves hashing of lists

Fixes https://github.com/flutter/flutter/issues/62223

* migrate foundation to nullsafety

* address review comments

This reverts commit 2c7e5dd9.

This reverts commit d986fdc3.

* Implement stack trace demangling in the framework.

* add language version 2.8 in packages/flutter

* enable non-nullable analyzer flag

Update to latest dwds APIs, moving back to dwds driven hot restart and enabling future work on expression evaluation.

* Fix stack trace parsing on non-debug builds; add e2e tests