[Status bar] Fix ongoing call chip clipping while appearing

Some other status bar changes added a few `wrap_contents` where we used
to have `match_height`. These interim views are mainly for left-right
alignment and measuring, so keeping the `match_parent` strategy should
have no other visible changes.

Test: manual; send an ongoing call notification and check animations
Fixes: 302160300
Change-Id: I1ffd55132358a0e05c31fae466a59f96419f17f4