Adds a note that source maps are not uploaded for debug

Author: antonis

docs/platforms/react-native/sourcemaps/uploading/expo.mdx

@@ -47,6 +47,7 @@ npx sentry-expo-upload-sourcemaps dist
 
 - `dist` is the default output directory of `eas update`.
 - Uploaded source maps have no associated releases. This is expected as updates can apply to multiple releases.
+- Uploading of source maps for debug or simulator builds is disabled.
 
 ## Notes