home: Don't pass on <return> to search bar

otherwise we end up activating from the search bar twice thus
launching the apps two times (which  most of the times doesn't
matter due to the apps single instance pattern but e.g. Firefox
shows the issue).

Fixes 60f6a2e1

Signed-off-by: Guido Günther <guido.gunther@puri.sm>

src/home.c

@@ -219,6 +219,9 @@ window_key_press_event_cb (PhoshHome *self, GdkEvent *event, gpointer data)
       phosh_home_set_state (self, PHOSH_HOME_STATE_FOLDED);
       ret = GDK_EVENT_STOP;
       break;
+    case GDK_KEY_Return:
+      ret = GDK_EVENT_PROPAGATE;
+      break;
     default:
       /* Focus search when typing */
       ret = phosh_overview_handle_search (PHOSH_OVERVIEW (self->overview), event);