[css-view-transitions-2] when copying css properties for layered capture, resolve lengths to a fixed value

[khushalsagar]

it wouldn't make sense to copy over padding: 10% to the view-transition-group since the relative lengths are derived from different containing blocks.

@noamr

[noamr]

but computed values already include resolved length/percentage into pixels... So I think we're good?

[khushalsagar]

Yes, that makes sense!