TimeRemaining doesn't work when animation has a negative play rate

TimeRemaining doesn't work when animation has a negative play rate

1. Create a Third Person template project
2. PIE and jump (space bar)
3. Open the ThirdPersonJump_Start animation sequence
4. Set the Play Rate to -1
5. PIE and jump

Result: Time Remaining stays at 0 and JumpStart state is skipped
Expected: Time Remaining adjusts for negative play rates