Update async storage fix (#41779)

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## Bug

- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have a helpful link attached, see `contributing.md`

## Feature

- [ ] Implements an existing feature request or RFC. Make sure the
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- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
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## Documentation / Examples

- [ ] Make sure the linting passes by running `pnpm lint`
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packages/next/client/components/static-generation-async-storage.ts

@@ -0,0 +1,4 @@
+export {
+  staticGenerationAsyncStorage,
+  StaticGenerationStore,
+} from './static-generation-async-storage/storage.js'

packages/next/client/components/static-generation-async-storage/package.json

@@ -1,4 +1,5 @@
 {
-  "browser": "./browser.js",
-  "main": "./node.js"
+  "browser": {
+    "./storage.js": "./storage-browser.js"
+  }
 }