Add resolveActivityAsUserForExplicitType api to pm

allow checking for resolved activity for an intent with a specific type

allowing the intent to declare its own type can lead to a security
vulnerability if the intent changes its type after the IntentForwarder#canForward
check.

Use the new API in IntentForwarderActivity to prevent checking the intent's type twice.

Update other call sites of IntentForwarder#canForward to extract the resolved type from the intent and pass in to to the method call

Check the launch package rather than calling package

sanitize intent selector as well as received intent

Bug: 403565650 407763772 397216638
Flag: EXEMPT bugfix
Test: manually tested
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:57233409d9bb5aef50373760a9b6551aa618c808)
Merged-In: I8453f25ed5ddd938718f4d2be4983c881778f281
Change-Id: I8453f25ed5ddd938718f4d2be4983c881778f281