feat(A11yFeedback): Implements page ID to feedback bucket ID mapping

This change adds a new API to a Pixel overlay feature provider,
allowing Android to map page IDs to feedback bucket IDs.

Bug: 393980229
Test: Manual testing for Pixel and non-Pixel overlay in real device
Test: atest AccessibilitySettingsTest
            FeedbackManagerTest
Flag: com.android.server.accessibility.enable_low_vision_generic_feedback
Change-Id: I8a110b08816cac9c8a8e8c3e1218530fffb6f121