Update Expectations of update method (#7119)

* Update Expectations of `update` method

Change `update` to return current state
when `shouldUpdate` returns false.

* Delete Accidental Tests

libs/common/src/platform/state/implementations/default-single-user-state.ts

@@ -91,7 +91,7 @@ export class DefaultSingleUserState<T> implements SingleUserState<T> {
         : null;
 
     if (!options.shouldUpdate(currentState, combinedDependencies)) {
-      return;
+      return currentState;
     }
 
     const newState = configureState(currentState, combinedDependencies);