More thorough check for expensive rendering

The intent of this check is to determine whether we need to do any color
conversion. For simplicity, we assumed we would need to do color
conversion if the display is P3. This isn't necessarily the case,
though; if all the input buffers are P3, we won't need color conversion.
And if the display is anything besides P3, we still may need it. Check
all the layers; if any does not match the outputDataspace, we will do
color conversion.

Bug: 221067687
Test: manual (logcat)
Test: jank tracking
Change-Id: I5c77769cf9fd2f07806c97022fa4bb940bfcc1ac