Filter power search term options

Summary: Project doc: https://docs.google.com/document/d/1miofxds9DJgWScj0zFyBbdpRH5Rj0T9FqiCapof5-vU

Reviewed By: lblasa

Differential Revision: D48558180

fbshipit-source-id: 311d5ed1859d0a31f85942772a956c46f58be46e

desktop/flipper-plugin/src/ui/PowerSearch/index.tsx

@@ -154,7 +154,11 @@ export const PowerSearch: React.FC<PowerSearchProps> = ({config}) => {
             },
           ]);
         }}
-        value={''}
+        filterOption={(inputValue, option) => {
+          return !!option?.label
+            .toLowerCase()
+            .includes(inputValue.toLowerCase());
+        }}
       />
     </div>
   );