Make MainActivity the default activity for AOSP.

This also finishes moving all of the old tests over from
Dialtacts to Main. The only 2 tests that fail are:
 - searchBoxClosedWhenHandlingNotificationIntent
 - openSearchFragment_fabGoneInRegularSearchAfterRotation

I will fix these in a follow up CL.

Bug: 72525887
Test: dialer_aosp build target launches MainActivity, TAP
PiperOrigin-RevId: 189408987
Change-Id: Ice30191d95c19c62bcd89503e89f66440f30beac
diff --git a/java/com/android/dialer/app/manifests/activities/AndroidManifest.xml b/java/com/android/dialer/app/manifests/activities/AndroidManifest.xml
index 9e08f5f..b9e5f62 100644
--- a/java/com/android/dialer/app/manifests/activities/AndroidManifest.xml
+++ b/java/com/android/dialer/app/manifests/activities/AndroidManifest.xml
@@ -25,7 +25,7 @@
       android:exported="false"
       android:label="@string/dialer_settings_label"
       android:name="com.android.dialer.app.settings.DialerSettingsActivity"
-      android:parentActivityName="com.android.dialer.app.DialtactsActivity"
+      android:parentActivityName="com.android.dialer.main.impl.MainActivity"
       android:theme="@style/SettingsStyle">
       <intent-filter>
         <action android:name="android.intent.action.VIEW" />
@@ -38,6 +38,7 @@
          stateAlwaysHidden is set to suppress keyboard show up on
          dialpad screen. -->
     <activity
+      android:enabled="false"
       android:clearTaskOnLaunch="true"
       android:directBootAware="true"
       android:label="@string/launcherActivityLabel"
@@ -46,7 +47,6 @@
       android:resizeableActivity="true"
       android:theme="@style/DialtactsActivityTheme"
       android:windowSoftInputMode="stateAlwaysHidden|adjustNothing">
-
       <intent-filter>
         <action android:name="android.intent.action.DIAL"/>
 
@@ -113,7 +113,6 @@
         <category android:name="android.intent.category.TAB"/>
       </intent-filter>
 
-
       <meta-data
         android:name="com.android.keyguard.layout"
         android:resource="@layout/keyguard_preview"/>
@@ -122,7 +121,7 @@
     <activity-alias
         android:exported="true"
         android:name="com.android.dialer.DialtactsActivity"
-        android:targetActivity="com.android.dialer.app.DialtactsActivity"/>
+        android:targetActivity="com.android.dialer.main.impl.MainActivity"/>
 
   </application>
 
diff --git a/java/com/android/dialer/main/impl/AndroidManifest.xml b/java/com/android/dialer/main/impl/AndroidManifest.xml
index 972c9d9..b3d916b 100644
--- a/java/com/android/dialer/main/impl/AndroidManifest.xml
+++ b/java/com/android/dialer/main/impl/AndroidManifest.xml
@@ -22,7 +22,6 @@
     <activity
       android:clearTaskOnLaunch="true"
       android:directBootAware="true"
-      android:enabled="false"
       android:exported="true"
       android:icon="@drawable/nui_launcher_icon"
       android:label="@string/main_activity_label"