Revert "a6eb22454 android platform channels: moved to direct buffers for c <-> java interop (flutter/engine#26331) (#83518)" (#83533)

This reverts commit 58ac7b85.

a6eb22454 android platform channels: moved to direct buffers for c <-> java interop (flutter/engine#26331) (#83518)

737110c24 [image_picker] Migrate maven repo from jcenter to mavenCentral (flutter/plugins#3915) (#83517)

* [flutter_tools] remove mocks from fuchsia device start test

* change import

e1204944f Fix deferred components startup threading and improve .so search algorithm. (flutter/engine#26429) (#83464)

To specify the dill file that will be used to initialize the resident
compiler, instead of the default cached version.

a832502ea Fixes iOS refuses to accept semantics rect update if UISwitch is not … (flutter/engine#26416) (#83457)

2470420ba [local_auth] Migrate maven repo from jcenter to mavenCentral (flutter/plugins#3917) (#83451)

Windows plugins are designed to share implementations between Win32 and
UWP, but not all plugins will support both. This adds a new
'supportedVariants' key to Windows plugins that allows specifying
'win32' and/or 'uwp' (and potentially others in the future in case that
becomes necessary).

Plugins without any supported variants will be assumed to be Win32 for
backward compatibility.

This will allow compiling Windows projects that use Win32-only Windows
plugins (which is currently all of them) in UWP mode. The plugins will
of course throw missing implementation exceptions at runtime, but tehy
won't prevent being able to build as they currently do.

Fixes https://github.com/flutter/flutter/issues/82815

8f4c774ff [video_player] Add URL for exoplayer to maven for all dependents (flutter/plugins#3979) (#83436)