Add embedded player integration tests for Remote Compose animations

Adds end-to-end integration tests using RcPlayer in player-compose-embedded to verify:
- animateRemoteFloatAsState linear frame progression and intermediate dimension updates
- animateRemoteDpAsState sizing animations
- Reactive target value updates triggered via click actions (valueChange)
- Easing curves differentiation (Linear, Accelerate, Decelerate, Cubic)
- Multiple simultaneous independent animations
- Reaching idle without timeout for animated documents

Test: ./gradlew :compose:remote:integration-tests:player-compose-embedded:test
Bug: 549015113
TAG=agy
CONV=9544d4ef-8944-47b9-ba15-bdcc0fd6022d

Change-Id: If7fc6d22b80ea9dcbd166dc305dfd6624f2c5e06