fix(redux): Improve Redux state attachment handling

Refactors the code responsible for attaching the Redux
state to Sentry events. The change enhances
efficiency by avoiding the addition of empty JSON
attachments when there is no Redux state available.

packages/react/src/redux.ts

@@ -98,10 +98,12 @@ function createReduxEnhancer(enhancerOptions?: Partial<SentryEnhancerOptions>):
     <S = any, A extends Action = AnyAction>(reducer: Reducer<S, A>, initialState?: PreloadedState<S>) => {
       options.attachReduxState &&
         addGlobalEventProcessor((event, hint) => {
-          hint.attachments = [
-            ...(hint.attachments || []),
-            { filename: 'reduxState.json', data: JSON.stringify(event.contexts && event.contexts.state) || ' ' },
-          ];
+          if (event.contexts && event.contexts.state && event.contexts.state.type === 'redux') {
+            hint.attachments = [
+              ...(hint.attachments || []),
+              { filename: 'redux_state.json', data: JSON.stringify(event.contexts.state.value) },
+            ];
+          }
           return event;
         });