ui: exclude TunnelToggleActivity from recents

Fixes annoying behavior in quick settings widget, when you enable
the tunnel, try to switch to last used app, but instead it switches to
the toggle activity and turns the tunnel off.

Signed-off-by: Rin Patch <[email protected]>
Signed-off-by: Harsh Shandilya <[email protected]>

Author: rinpatch

ui/src/main/AndroidManifest.xml

@@ -41,7 +41,8 @@
 
         <activity
             android:name=".activity.TunnelToggleActivity"
-            android:theme="@style/NoBackgroundTheme" />
+            android:theme="@style/NoBackgroundTheme"
+            android:excludeFromRecents="true"/>
 
         <activity android:name=".activity.MainActivity">
             <intent-filter>