PIE: On-The-Spot: Fix abnormal behavior when chosing ASK_LATER

Right now when chosing ask later it does not activate default immersive for that immersion.
We should call switchImmersiveGlobal() no matter what we chose on on-the-spot dialog,
also if immersive mode is disabled and is going to be activated.

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
Merge "PIE: On-The-Spot: Fix abnormal behavior when chosing ASK_LATER" into kitkat