fix(rn,filmstrip) fix invalid selector registered as state listener

react/features/filmstrip/functions.native.ts

@@ -85,6 +85,16 @@ export function getActiveParticipantsIds(_state: any) {
     return [];
 }
 
+/**
+ * Not implemented on mobile.
+ *
+ * @param {any} _state - Redux state.
+ * @returns {Array<Object>}
+ */
+export function getPinnedActiveParticipants(_state: any) {
+    return [];
+}
+
 /**
  * Returns the number of participants displayed in tile view.
  *