Do not set very small bounds for non-drag case

When non drag drop intent enter split case, we will set main stage
as fullscreen bounds and set very small bounds for side stage.
This might lead some race condition to compat mode. To avoid this,
we could set invisible bounds at first for this case, invisible
bounds is a normal half screen size bounds but outside of screen.

Fix: 286613903
Fix: 289583969
Test: manual
Test: pass existing tests
Change-Id: I5e8fffed1c7deda1d9591b1452ed0097048e3c59