Starting swipe-to-all-apps outside of areas triggering long-press

I suspect that some tests using TAPL run under pressure (mem or CPU,
created either intentionally or as a result of a leak somewhere)
where test process may generate a pause between DOWN and MOVE events
enough to be recognized as a long tap, which opens a context menu
instead of swiping.

While the clean solution is b/140252325, this is a workaround.

Bug: 144853809
Change-Id: I135eaee608270b7e60bb072cb360632763cbe5c5