[PS] Update Install button string.

Screenshot: https://screenshot.googleplex.com/B6UrJt92QMMgSuG

Bug: 338357091
Test: manual
Flag: aconfig com.android.launcher3.private_space_app_installer_button nextfood
Change-Id: Ia408ccfa20ea3c142bd22c326954d278fa571815
2 files changed