Camera: Add new camera metadata for settings override frame number

Add a frame number field in HAL capture result metadata to indicate
the frame number of newer request overriding this capture.

This is needed so that ZoomRatioMapper can look up the newer request's
zoom ratio.

Also add VTS test for transition between OFF and ZOOM.

Test: Camera VTS on cuttlefish
Bug: 239822823
Change-Id: I7439950cdb9f346bf36c4cc872fd7865eb9cf669