Remove the backlink resolves to same app check

- Backlinks now uses the name and icon of the app that backlink will
  resolve to instead of the screenshotted app.

Flag: com.android.systemui.app_clips_backlinks
Test: atest AppClipsActivityTest AppClipsViewModelTest AppClipsTest
Bug: 356129075
Fix: 356129075
Change-Id: I2a8d80c4d2dbd0e2f444e0e3e870e3aa0efc41d8