Check mAttachInfo.mSystemUiVisibility to see if a SysUI flag exists

Previously, we checked info.globalVisibility to see if a system UI flag
exists, but since updateCompatSysUiVisibility can process more than one
type of one system bar, info.globalVisibility might be changed by one
type before the other type checks it. For example, if we process
ITYPE_CLIMATE_BAR first with visible=true and hasControl=false, and
then, when we process ITYPE_STATUS_BAR with visible=true and
hasControl=true, we cannot clear SYSTEM_UI_FLAG_FULLSCREEN by setting it
to info.localChanges, because wasVisible is false now.

Fix: 226555579
Bug: 225765490
Test: atest WindowInsetsControllerTests
Change-Id: I820842c7fe14fc47141a4fa09cfddf68f89dbd41