ref(flags): temporarily mention beta release version in JS integration docs

Author: aliu39

docs/platforms/javascript/common/configuration/integrations/launchdarkly.mdx

@@ -25,7 +25,7 @@ notSupported:
 
 <Alert level="info">
 
-This integration only works inside a browser environment.
+This integration only works inside a browser environment. Please install @sentry/browser [v8.41.0-beta.1](https://www.npmjs.com/package/@sentry/browser/v/8.41.0-beta.1) (this is temporary. This integration will be included in the next 8.43 release).
 
 </Alert>