Separating various overrides to individual modules so that they can be reused in tests
Removing ContextualEduStatsManager and directly using SysUiProxy as all the usescases
are only in quickstep/
This avoids additional Module definition and delegation
Bug: 361850561
Test: Presubmit
Flag: EXEMPT dagger
Change-Id: I096459d638553991ed01766002b874589c6b976e
