Set activity label instead of window's accessibilityTitle

Clean up for aosp/3376055

Bug: 376780875
Test: follow the instruction in the bug
Change-Id: I7af3fe14a8f768d0022a0523a7301317931c9d80
diff --git a/android/TerminalApp/AndroidManifest.xml b/android/TerminalApp/AndroidManifest.xml
index a9d6e9d..a631d0f 100644
--- a/android/TerminalApp/AndroidManifest.xml
+++ b/android/TerminalApp/AndroidManifest.xml
@@ -47,9 +47,12 @@
             </intent-filter>
         </activity>
         <activity android:name=".SettingsActivity" />
-        <activity android:name=".SettingsDiskResizeActivity" />
-        <activity android:name=".SettingsPortForwardingActivity" />
-        <activity android:name=".SettingsRecoveryActivity" />
+        <activity android:name=".SettingsDiskResizeActivity"
+            android:label="@string/settings_disk_resize_title" />
+        <activity android:name=".SettingsPortForwardingActivity"
+            android:label="@string/settings_port_forwarding_title" />
+        <activity android:name=".SettingsRecoveryActivity"
+            android:label="@string/settings_recovery_title" />
         <activity android:name=".ErrorActivity" />
         <property
             android:name="android.window.PROPERTY_ACTIVITY_EMBEDDING_SPLITS_ENABLED"