RESTRICT AUTOMERGE Normalize home intent

In order to prevent home activities being started as a standard
type activity due to incorrect home intent format.

Bug: 384656159
Bug: 378505461
Test: the same app on the bug
Test: ActivityStartInterceptorTest
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:67ace66f8c9507b701f55bd23a87638bbe1eec76)
Merged-In: I300f705798909014329f92118c266dbc04173e05

Change-Id: I300f705798909014329f92118c266dbc04173e05