Allow source task bounds to be inherited if task is no longer visible

Source task bounds are currently inherited only if we can infer the
instance will be closed with the launch of the new task. However, if
the source task is no longer visible we do not need to rely on the
source instance closing as it should be safe to inherit its bounds as it
is no longer being displayed.

Flag: EXEMPT bug fix
Test: atest WmTests:DesktopModeLaunchParamsModifierTests
Fix: 425773966
Change-Id: Ic9e6bbef7a6232148e1130e1a181098ede1c2104