Make the AQS Test App behave more typically for Perf start up (#7158)

This changes the main activity to be on the default process, allowing
the more typical FirebaseInitProvider initialization of Firebase. The
other processes will still initialize manually

Author: mrober

firebase-perf/CHANGELOG.md

@@ -1,5 +1,8 @@
 # Unreleased
 * [fixed] Fixed an ANR on app launch. [#4831]
+* [changed] Updated `firebase-sessions` dependency to v3.0.0
+* [fixed] Fixed the issues around unifying the sessions in `firebase-sessions` 
+  and`firebase-performance`.
 
 # 22.0.0
 * [changed] **Breaking Change**: Updated minSdkVersion to API level 23 or higher.
@@ -442,4 +445,3 @@ updates.
 
 # 16.1.0
 * [fixed] Fixed a `SecurityException` crash on certain devices that do not have Google Play Services on them.
-

firebase-perf/gradle.properties

@@ -15,7 +15,7 @@
 #
 #
 
-version=22.0.1
+version=22.1.0
 latestReleasedVersion=22.0.0
 android.enableUnitTestBinaryResources=true
 

firebase-sessions/test-app/src/main/AndroidManifest.xml

@@ -28,7 +28,6 @@
       android:exported="true"
       android:label="@string/app_name"
       android:name=".MainActivity"
-      android:process=":main"
       android:theme="@style/Theme.Widget_test_app.NoActionBar">
       <intent-filter>
         <action android:name="android.intent.action.MAIN" />

firebase-sessions/test-app/src/main/kotlin/com/google/firebase/testing/sessions/TestApplication.kt

@@ -37,7 +37,12 @@ class TestApplication : MultiDexApplication() {
   override fun onCreate() {
     super.onCreate()
     Log.i(TAG, "TestApplication created on process: $myProcessName")
-    FirebaseApp.initializeApp(this)
+
+    // Initialize firebase for all processes except the default process
+    // The default process will get initialized automatically by FirebaseInitProvider
+    if (myProcessName != packageName) {
+      FirebaseApp.initializeApp(this)
+    }
 
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
       registerReceiver(