fix: conversations opened from push now go back to home activity

app/src/main/AndroidManifest.xml

@@ -221,7 +221,12 @@
         <activity
             android:name="org.thoughtcrime.securesms.conversation.v2.ConversationActivityV2"
             android:screenOrientation="portrait"
-            android:theme="@style/Theme.Session.DayNight.FlatActionBar" />
+            android:parentActivityName="org.thoughtcrime.securesms.loki.activities.HomeActivity"
+            android:theme="@style/Theme.Session.DayNight.FlatActionBar">
+            <meta-data
+                android:name="android.support.PARENT_ACTIVITY"
+                android:value="org.thoughtcrime.securesms.loki.activities.HomeActivity" />
+        </activity>
         <activity
             android:name="org.thoughtcrime.securesms.loki.activities.OpenGroupGuidelinesActivity"
             android:screenOrientation="portrait"