Display SF layer based on size, crop & parent instead of buffer size

It is no longer possible to use only the size property because Color
layers do not set a buffer size.

Use the following rule to highlight the selected layers on the UI:
- If the layer has a size and a crop, use their intersection.
- Else, if the layer has no size, but has crop, use the crop as size
- Else, use the parent size

Bug: 121198524
Test: Open trace in winscope, select visible layer, check if highlighted
Change-Id: I55298f20efa31830097a41d45d8d8b1c6b4ed2e6