Update bubble bar pin controller after parent class refactor

Some of the common logic related to exclusion zone calculation moved to
parent class. Update the bubble bar controller based on the refactor.

Bug: 330585402
Flag: ACONFIG com.android.wm.shell.enable_bubble_bar DEVELOPMENT
Test: run shell unit tests, manual test
Change-Id: I5910f76f26aaf6d15a5f6f7c1399b36b80296aeb