camera2/3: set preview callback oneshot flag during still capture

Preview callback oneshot flag need set when a still picture is being captured
and preview callback oneshot is enabled, otherwise, the callback enabling status
could be lost when preview is restarted after still catpure.

Bug 9742091

Change-Id: If9562369013e53727edfdd16f3d00d6a9392e70d
1 file changed