[NotificationHeader] Fix NotifHeader and LargeIcon conflict

This CL fixes the relative layout constraint chain, which was the root cause of the notif header and large icon conflict.

Fixes: 350073463
Flag: EXEMPT BUGFIX
Test: Use Notify2 and send a bigtext/standard notifs with long text and large icon. Observe there is no conflict between header and largeicon.
Change-Id: Ie31726440e5c7a8d0834951fae5ad4ab86adb5b9
1 file changed