Fix e2e tests related to the brightness bar

The test failure is due to ag/33954289 which removes the brightness
mirror with Flexiglass enabled. As a result, some e2e tests cannot find
the brightness mirror container.

This CL ensures that swipeFromLeftToRight() with the Flexiglass
enabled uses the same code path with qsUiRefactorComposeFragment.

Bug: 423740945
Flag: EXEMPT bug_fix
Change-Id: Id1c22de20f602519e3b2303a6828050df0adeebe
1 file changed