Don’t consider move without actual bounds change as drag
This CL prevents DMWindowDecor from flipping `mIsDragging` for
ACTION_MOVE without actual bounds change.
Otherwise, no one resets the flag when...
1) ACTION_DOWN on caption button
2) ACTION_MOVE without actual bounds change on caption button
Note that ACTION_MOVE can be fired even when there is no position
change from the previous ACTION_DOWN
3) ACTION_UP on caption button
4) onClick on caption button
so the caption button click is ignored.
Bug: 364990718
Test: DesktopModeWindowDecorViewModelTests
Flag: EXEMPT bugfix
Change-Id: Icc15380b26f85c93a724966a7e09472b56f0d259
6 files changed