camera: fix frame deletion logic in mInFlightMap

For per-frame error notifications, camera3.h requirements state that all the
buffer handles for a failed frame capture must be returned via
process_capture_result() call(s). Hence, Camera3Device needs to ensure that
the frame entry is not deleted from mInFlightMap until all buffers for that
frame have been returned by HAL.

Bug: 17757940

Change-Id: I2579ca7980d2fd67d53abc530e2706538f7d3d3a