Fix pager state after configuration change

When we declare android:configChanges="orientation" in the manifest, the
pager state is in a weird state after configuration change.

Reset pager state to work around this issue after configuration change.

TODO: Remove this work around after the Compose Foundation 1.5.0-alpha04
      updated in the platform.

Bug: 281928661
Test: Manually with Gallery
Test: Manually with Settings
Change-Id: I8fa1a9603f67147cdacb0e0ab1a3f8a67286a995