Adds a note that source maps are not uploaded for debug mode in React Native / Expo (#11478)

* Adds a note that source maps are not uploaded for debug

* Adds a debug source maps notice on the main source maps page

---------

Co-authored-by: Krystof Woldrich <[email protected]>
Co-authored-by: Liza Mock <[email protected]>

Author: 3 people

docs/platforms/react-native/sourcemaps/index.mdx

@@ -50,3 +50,7 @@ sentry {
     uploadNativeSymbols = shouldSentryAutoUpload()
 }
 ```
+
+### Debug Builds
+
+Symbolication is handled directly by the Metro development server, automatically providing the symbolication needed to translate stack traces into readable source code in a development environment. There's no need to upload source maps for these types of builds which is why the automatic uploading of source maps is disabled. 

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

@@ -17,7 +17,7 @@ Sentry's React Native SDK works out of the box with Expo applications. To see re
 
 ## Automatic Upload for Release
 
-When the Sentry Expo Plugin `@sentry/react-native/expo` and the Sentry Metro Pugin are added to your application configuration, source maps for the native builds are uploaded automatically during EAS Builds and when building the native application release locally using `npx expo prebuild`.
+When the Sentry Expo Plugin `@sentry/react-native/expo` and the Sentry Metro Plugin are added to your application configuration, source maps for the native builds are uploaded automatically during EAS Builds and when building the native application release locally using `npx expo prebuild`. Because symbolication is already handled by the Metro dev server, automatic uploading of source maps for debug builds is disabled.
 
 ## Manual Upload for EAS Updates