Revert "Speed up first asset load by using the binary-formatted asset manifest for image resolution (#118782)" (#121220)

This reverts commit e3db0488.

Speed up first asset load by using the binary-formatted asset manifest for image resolution (#118782)

* add asset manifest bin loading and asset manifest api

* use new api for image resolution

* remove upfront smc data casting

* fix typecasting issue

* remove unused import

* fix tests

* lints

* lints

* fix import

* fix outdated type name

* restore AssetManifest docstrings

* update test

* update other test

* make error message for invalid keys more useful

This updates the framework to provide higher level wrappers around ui.instantiateImageCodecWithSize(). Functionally, this doesn't change anything (other than deprecating the older loadBuffer() method in favor of loadImage()), but it sets the stage for a simpler change that will allow us to provide a more flexible way to load sized images.

#118543

Fix Image's logical flow which disposes its image too early, causing errors such as "Cannot clone a disposed image" (#110131)

* Use `curly_braces_in_flow_control_structures` for `widgets`

* fix comments

* fix comments

* 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

This reverts commit 5fd259be.

This reverts commit d056500b.

This reverts commit 31de052e.

This reverts commit e2490f29.

Migrate yet even more widget framework tests to null safety.

* Reland dispose images when done (#67100)

Changes since last time:

- Test for CanvasKit image rendering
  (https://github.com/flutter/flutter/pull/67176)
- Fix CanvasKit dispose impl
  (https://github.com/flutter/engine/pull/21555)
- Update internal google3 customer with a problematic ImageStream
  Listener impl (cl/335091311, cl/335459002)

This reverts commit 473358d9.

* Revert "docs for image disposal (#67066)"

This reverts commit bcb2ac5a.

* Revert "Dispose of images after using them (#66688)"

This reverts commit a7954691.

* Dispose of images after using them
Adds ImageInfo.clone, ImageInfo.dispose, and ImageInfo.isCloneOf.
Makes all stateful holders of ui.Image objects properly clone and dispose of them.
Behavior change for ImageStreamCompleter: Removing the last listener after registering at least one listener results in the object being disposed, and new listeners cannot be added, unless a keepAlive handle is created.
Makes all non-stateful holders of ui.Image (i.e. paintImage and RawImage) assert that whoever gave the image to them has not disposed it on them.