Fix "Allow/Deny" popup window no respond when use cursor

Currently all buffered layers will send input info to InputFlinger in
order to detect if a window is obsecured by another layer. This could
cause the cursor sprite are calculated into the input windows and
generate the unexpected FLAG_(PARTIALLY)_OCCLUDED.

To fix this, we exclude the cursor layer when fill input info to
InputFlinger.

Bug: 158717144
Test: atest InputSurfacesTest
Test: connect mouse, open camera and popup grant permission dialog
Change-Id: Ic57dfc7b68f8bf8fda5d7a77e107ca023b55b891