Moving DisplayController to dagger

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