Camera: Fix missing onPhysicalCameraUnavailable

When onCameraAvailable invoked for a logical multi-camera, all of the
physical cameras of a logical multi-camera are default available (i.e.,
no onPhysicalCameraAvailable would be called). So if some specific physical cameras are unavailable, onPhysicalCameraUnavailable should be
invoked after onCameraAvailable.

Bug: 262979670
Test: atest CameraManagerTest
Change-Id: I6ee199ba30fa6f8c44c65d1e1d173fe6fd9ec3fe