Migration: Add a migration for dialer activity on upgrade to Q
* The Launchable activity for Dialer was `com.android.dialer/com.android.dialer.app.DialtactsActivity` on APIs < 29 and `com.android.dialer/com.android.dialer.main.impl.MainActivity` and thereforth. * Not handling this causes the Dialer Icon to displace from its initial position before upgrading to Android Q.