Add SYSUI_STATE_DISABLE_GESTURE_PIP_INVOCATION

This SysUiState flag would be set to true when PiP animation starts and
false when it finishes.

This is to prevent the Recents transition that may conflict with PiP.

Flag: EXEMPT bug fix
Bug: 340724371
Test: Swipe to show TaskBar while expanding PiP to FS mode
Change-Id: Ie20de7665caeb60f672efb89cf005d7b2d354d8b