Update checkKeyIntent

1) Explicityly set  component after target activity check.
2) Update Intent subclass check.

Bug: 360846772
Test: manual
Flag: EXEMPT bugfix
(cherry picked from commit cde345a7)
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:eaa1db81807eb7631515fccfd4288ff1e170977a)
Merged-In: Ied7961c73299681aa5b523cf3f00fd905893116f
Change-Id: Ied7961c73299681aa5b523cf3f00fd905893116f