tv: export TVContactActivity

Allows starting this activity from the launcher.

Change-Id: I162e3f088fd2724f22a8db7369632c2ab9023a4d

ring-android/app/src/main/AndroidManifest.xml

@@ -40,7 +40,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     <uses-permission android:name="android.permission.BLUETOOTH" android:maxSdkVersion="30" />
     <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
     <uses-permission android:name="android.permission.VIBRATE" />
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.WAKE_LOCK" />
     <uses-permission android:name="android.permission.CAMERA" />
@@ -398,7 +397,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
             android:icon="@mipmap/ic_launcher"
             android:label="@string/app_name"
             android:theme="@style/Theme.Leanback.Details"
-            android:exported="false" >
+            android:exported="true" >
             <intent-filter>
                 <action android:name="android.intent.action.VIEW" />