Require privapp grants for all launcher3 apps

The privapp permission grant file for launcher3 was previously only
installed for Launcher3QuickStep, which is the default launcher app
in the AOSP product config.

Make other apps use it too for products that override
Launcher3QuickStep (or use one of the other variants).

Bug: 123300025
Test: build/boot product with Launcher3QuickStepGo
Change-Id: I295ed7f1d65d1e6b4ba6364b2468182353340bbb
Merged-In: I295ed7f1d65d1e6b4ba6364b2468182353340bbb