Convert interpolated colors to original color space

This CL fixes a crash that can happen when animating a Color using
animateElementColorAsState(): the interpolated Color will end up in the
Oklab color space (instead of the original color space), which is not
supported by the Android platform.

Bug: 382043554
Test: atest AnimatedSharedAsStateTest
Flag: com.android.systemui.scene_container
Change-Id: I6b32af10534f6112560bc174e734c00ce442688b