Add Suspense tests for Animation Backend (#56121)

Summary:

Add integration tests to verify that native-driven animations continue running correctly through Suspense transitions and react-freeze cycles.

These tests ensure animation state is preserved when components are suspended, frozen/unfrozen, or undergo multiple freeze cycles — catching regressions in the Animation Backend's interaction with React's concurrent features.

# Changelog
[General][Added] - Suspense tests for the Animation Backend

Reviewed By: zeyap

Differential Revision: D96910964

Author: Bartlomiej Bloniarz