cameraserver: Fix logic to skip callbacks for non HAL3 devices for vendor listeners.

Fixes regression caused by aosp/1152176, status update callbacks were being skipped
for non HAL3 devices for non vendor listeners. Non vendor listeners
should still get callbacks in case of non HAL3 devices.

Bug: 150180641

Test: Camera2 App
Test: CTS
Test: Use vendor clients of cameraserver
Test: Vendor testing

Merged-In: Ic31f71887b55f3d838ca35274a5f65802ea50584
Change-Id: Ifab0be4dac4b42f6923ce48ab57aeb0aaf26575b
Signed-off-by: Jayant Chowdhary <jchowdhary@google.com>