test: update tests from requested changes

- clean up jsdoc comments
- add additional assertion that cache is set.

Author: Prithpal-Sooriya

packages/remote-feature-flag-controller/src/remote-feature-flag-controller.test.ts

@@ -210,7 +210,7 @@ describe('RemoteFeatureFlagController', () => {
        * @param opts - The options for the arrangeActAssertClientVersionChange test
        * @param opts.clientVersion - The client version to use
        * @param opts.controllerState - The controller state to use
-       * @param opts.expectedFeatureFlagState - The expected feature flag state\
+       * @param opts.expectedFeatureFlagState - The expected feature flag state
        * @returns The controller state after the arrangeActAssertClientVersionChange test
        */
       const arrangeActAssertClientVersionChange = async (opts: {
@@ -251,6 +251,9 @@ describe('RemoteFeatureFlagController', () => {
           enabled: expectedFeatureFlagState,
         });
 
+        // Assert - cache timestamp has been updated
+        expect(controller.state.cacheTimestamp).toBeGreaterThan(0);
+
         return controller.state;
       };