https://github.com/flutter/engine/pull/51229 blocked [the roll](https://github.com/flutter/flutter/pull/146522) and had to be reverted, which is a shame, but on the bright side it made it possible to point the framework at my removal pr, at the point of its merging the first time
This fixes all errors that are fixable in the framework that would have blocked the roll. There are some that aren't fixable here (they need to be fixed in the engine)*, so I'll fix those in the engine but unfortunately I can't pick up another version here to re-test until I try to roll again ð¢
*This category is: uses of plugins that in turn have a `registerWith`, that references the v1 embedding. The plan to fix these cases is to leave the interface that that method relies on around for now. See https://github.com/flutter/packages/pull/6494#issuecomment-2046010323 for details
Fixes https://github.com/flutter/flutter/issues/89683.
The changes to `getFlutterView` in `FlutterDeviceScreenshot` are the fix that was required, everything else was done to get tests running (such as re-generating some lockfiles and modifying the android manifest).
The code was all currently not unit tested, and there were no other easy examples to base these java unit tests off in flutter/flutter, so let me know if this approach to testing is wrong.
