PIE: On-The-Spot: Apply immersive not only at first ASK_LATER choice, always

PIE's on the spot dialog is handled differently with pie, we have to reset to let observer capture
a second etc ask later choice.

Continue this https://gerrit.paranoidandroid.co/#/c/4347/

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>