Cleanup TaskFragmentOrganizer#applyTransaction

Replace the existing usage with the overload method, which is introduced
to sync TaskFragmentOrganizer with other transition.

Introduced TaskFragmentTransitionType to avoid exposing Shell transition
API to CTS.

Bug: 232476698
Test: pass existing
Change-Id: I666b9ee6b6076766513b97e675fdbaa002428601
7 files changed