* update pinned null safety deps

* run update-packages

* add http dep to devicelab package

* rerun update-packages

Updates all null safe dependencies to versions that allow 2.10 stable and 2.11 dev releases.

Also updates flutter_goldens and flutter_goldens_client to allow 2.11 dev.

[versions] update to latest source span and roll engine to  4b8477d11573d233e6791204191c0090f733b05d (#66136)

This reverts commit c46aa360.

*  Fix Spelling Issues in Main README.md

*  Fix spelling issues in dev README.md

*  Fix spelling issues in complex_layout README.md

*  Fix spelling issues in macrobenchmarks README.md

*  Fix spelling issues in platform_views_layout README.md

*  Fix spelling issues in test_Apps/stocks README.md

*  Fix spelling issues in bots README.md

*  Spell Check dev/ci README.md

*  Spell Check dev/ci/docker_linux README.md

*  Spell Check dev/devicelab README.md

*  Spell Check dev/docs README.md

*  Spell Check dev/snippets README.md

*  Spell Check dev/snippets/config/templates README.md

*  Spell Check dev/tools/gen_keycodes README.md

*  Spell Check dev/tools/vitool README.md

*  Spell Check examples/catalog README.md

*  Spell Check examples/flutter_view README.md

*  Spell Check examples/image_list README.md

*  Spell Check examples/layers README.md

*  Spell Check examples/platform_channel README.md

*  Spell Check examples/platform_channel_swift README.md

*  Spell Check examples/platform_view README.md

*  Spell Check packages/_flutter_web_build_script README.md

*  Spell Check packages/flutter_localizations README.md

*  Spell Check packages/flutter_tools README.md

*  Spell Check CODE_OF_CONDUCT.md

*  Spell Check dev/integration_test/android_splash_screens/splash_Screen_load_rotate README.md

*  Spell Check dev/integration_test/android_views README.md

*  Spell Check dev/integration_tests/flutter_driver_screenshot_test README.md

*  Spell Check dev/integration_tests/flutter_gallery README.md

*  Spell Check dev/integration_tests/gradle_deprecated_settings README.md

*  Spell Check dev/integration_tests/ios_add2app_life_cycle README.md

*  Spell Check dev/integration_tests/ios_host_app README.md

*  Spell Check dev/integration_tests/ios_platform_view_tests README.md

*  Spell Check dev/automated_tests/flutter_test README.md

*  Spell Check .github/PULL_REQUEST_TEMPLATE.md

*  Spell Check .hithub/ISSUE_TEMPLATE/ACTIVATION.md

*  Spell Check .github/ISSUE_TEMPLATE/BUG.md

*  Spell Check .github/ISSUE_TEMPLATE/feature_request.md

*  Spell Check .github/ISSUE_TEMPLATE/performance_others.md

*  Spell Check .github/ISSUE_TEMPLATE/performance_speed.md

*  Spell Check packages/flutter_tools/doc/daemon.md

*  Spell Check packages/flutter_tools/fuchsia_enrtypoint_shim/README.md

*  Minimize line to 80 columns

*  Minimize line to 80 columns

*  Fix Typo

*  Chnaged numbers to 1 for testing purposes

*  Changed numbers to 1 for testing purposes

*  Remove 'a' which is a typo

*  Change a sentence to be better

*  Remove 'a' which is a typo

*  Fix small issue

*  Fix small typo

*  Fix some typos

*  Remove trailing space

*  Remove trailing space

*  Fix small typo

*  Fix Typo

*  Fix small bug

Revert "Reland "Add support for Dart Development Service (DDS) in Flutter Tools (#61276)" (#61975)" (#61993)

This reverts commit f7a1c87f.

This reverts commit 4867f593.

Revert "Reland "Add support for Dart Development Service (DDS) in Flutter Tools (#61276)" (#61882)" (#61909)

This reverts commit 895b7ef6.

This reverts commit 38fe8873.

This reverts commit b7b60a2d.

Revert "Reland "Add support for Dart Development Service (DDS) in Flutter Tools (#61276)" (#61633)" (#61641)

This reverts commit 594c3541.

This reverts commit a1a5a8f6.

Roll packages, update XML deprecations.

Update all versions, specifically file which fixes some bugs that caused tests to fail if run in different orders:

- systemTemp directories created by MemoryFileSystem will allot names based on the file system instance instead of globally.
- MemoryFile.readAsLines()/readAsLinesSync() no longer treat a final newline in the file as the start of a new, empty line.
- RecordingFile.readAsLine()/readAsLinesSync() now always record a final newline.

Fixes #59718

Update all versions, specifically dwds which has a hot restart fix