…imationBackend` (facebook#54058)

Summary:

## Changelog:

[Internal] [Changed] - create UIManagerAnimationBackend to replace forward declare `class AnimationBackend`

for other delegates in UIManager, we usually explicitly create an interface in UIManager package with the public APIs we want to expose, we can follow that pattern here, so we avoid the forward declaration without definition situation, and decoupling UIManager with AnimationBackend

also this way, in the future, animation runtimes that consume AnimationBackend can just include `UIManagerAnimationBackend` (where we expose all of public APIs of AnimationBackend) and remain somewhat decoupled too

Reviewed By: sammy-SC

Differential Revision: D83679693

…imationBackend` (facebook#54058)

Summary:

## Changelog:

[Internal] [Changed] - create UIManagerAnimationBackend to replace forward declare `class AnimationBackend`

for other delegates in UIManager, we usually explicitly create an interface in UIManager package with the public APIs we want to expose, we can follow that pattern here, so we avoid the forward declaration without definition situation, and decoupling UIManager with AnimationBackend

also this way, in the future, animation runtimes that consume AnimationBackend can just include `UIManagerAnimationBackend` (where we expose all of public APIs of AnimationBackend) and remain somewhat decoupled too

Reviewed By: sammy-SC

Differential Revision: D83679693

…imationBackend` (facebook#54058)

Summary:

## Changelog:

[Internal] [Changed] - create UIManagerAnimationBackend to replace forward declare `class AnimationBackend`

for other delegates in UIManager, we usually explicitly create an interface in UIManager package with the public APIs we want to expose, we can follow that pattern here, so we avoid the forward declaration without definition situation, and decoupling UIManager with AnimationBackend

also this way, in the future, animation runtimes that consume AnimationBackend can just include `UIManagerAnimationBackend` (where we expose all of public APIs of AnimationBackend) and remain somewhat decoupled too

Reviewed By: sammy-SC

Differential Revision: D83679693

…imationBackend` (facebook#54058)

Summary:

## Changelog:

[Internal] [Changed] - create UIManagerAnimationBackend to replace forward declare `class AnimationBackend`

for other delegates in UIManager, we usually explicitly create an interface in UIManager package with the public APIs we want to expose, we can follow that pattern here, so we avoid the forward declaration without definition situation, and decoupling UIManager with AnimationBackend

also this way, in the future, animation runtimes that consume AnimationBackend can just include `UIManagerAnimationBackend` (where we expose all of public APIs of AnimationBackend) and remain somewhat decoupled too

Reviewed By: sammy-SC

Differential Revision: D83679693

…imationBackend` (facebook#54058)

Summary:

## Changelog:

[Internal] [Changed] - create UIManagerAnimationBackend to replace forward declare `class AnimationBackend`

for other delegates in UIManager, we usually explicitly create an interface in UIManager package with the public APIs we want to expose, we can follow that pattern here, so we avoid the forward declaration without definition situation, and decoupling UIManager with AnimationBackend

also this way, in the future, animation runtimes that consume AnimationBackend can just include `UIManagerAnimationBackend` (where we expose all of public APIs of AnimationBackend) and remain somewhat decoupled too

Reviewed By: sammy-SC

Differential Revision: D83679693

…imationBackend` (facebook#54058)

Summary:

## Changelog:

[Internal] [Changed] - create UIManagerAnimationBackend to replace forward declare `class AnimationBackend`

for other delegates in UIManager, we usually explicitly create an interface in UIManager package with the public APIs we want to expose, we can follow that pattern here, so we avoid the forward declaration without definition situation, and decoupling UIManager with AnimationBackend

also this way, in the future, animation runtimes that consume AnimationBackend can just include `UIManagerAnimationBackend` (where we expose all of public APIs of AnimationBackend) and remain somewhat decoupled too

Reviewed By: sammy-SC

Differential Revision: D83679693

…imationBackend` (facebook#54058)

Summary:

## Changelog:

[Internal] [Changed] - create UIManagerAnimationBackend to replace forward declare `class AnimationBackend`

for other delegates in UIManager, we usually explicitly create an interface in UIManager package with the public APIs we want to expose, we can follow that pattern here, so we avoid the forward declaration without definition situation, and decoupling UIManager with AnimationBackend

also this way, in the future, animation runtimes that consume AnimationBackend can just include `UIManagerAnimationBackend` (where we expose all of public APIs of AnimationBackend) and remain somewhat decoupled too

Reviewed By: sammy-SC

Differential Revision: D83679693