[ITS][test_ae_awb_regions]Handle test case where preview flips left/right

When preview flips from left to right with sensor orientation 0 (portrait),
the order of the ae/awb regions will be flipped as well.
Need to test/handle that test case with possibly foldables.

Bug: 335034592
Test: run scene8/test_ae_awb_regions.py
Change-Id: I3e475b9f5c6b25a780b31f8dae22c77f110e9841