Expose missing camera characteristics.

These keys are documented as present for every camera and are causing
camera CTS failures.

Bug: 301023410
Bug: 322965201
Test: adb shell cmd virtual_camera enable_test_camera && atest BustCaptureTest
Test: atest virtual_camera_tests
Test: atest CtsVirtualCameraTestCases
Change-Id: I6d67f94b69eb9c1af2bf288156891b8a952092af