Migrate ENABLE_CURSOR_HOVER_STATES to aconfig

- Keeping FeatureFlags.ENABLE_CURSOR_HOVER_STATES for local testing until aconfig is available in FlagFlipper
- Still reference ENABLE_CURSOR_HOVER_STATES in tests as aconfig still can't be mocked

Bug: 300054410
Test: manual
Change-Id: Id385e8ee32ccf8b920b9b7f9cc620af32def589f
7 files changed