Revert "Refactor iOS integration_test API to support Swift, dynamically add native tests (#88013)" (#88377)

This reverts commit 9e3de9a3.

- Update dwds and and the rest of the packages

Closes: https://github.com/flutter/flutter/issues/87100

* Upgrade all packages

In particular, bring in dwds with latest fixes for flakes.

Closes: https://github.com/flutter/flutter/issues/85043
Related: https://github.com/flutter/flutter/issues/85575

* Re-enable fixed tests

* Disable failing test due to DDS issue

This reverts commit d056500b.

This reverts commit 31de052e.

This reverts commit e2490f29.

* [web] move e2e tests from flutter/engine to flutter/flutter
* flutter update-packages --force-upgrade

shelf 1.1.2 -> 1.1.4
flutter_template_images 1.0.2 -> 3.0.0

* Add 'v' hotkey to open DevTools in the browser