chore(Unity): Added Mono & Line Numbers to Known Limitations (#14736)

Author: bitsandfoxes

docs/platforms/unity/troubleshooting/known-limitations.mdx

@@ -30,6 +30,10 @@ The exception provided by Unity that is getting captured by the logging integrat
 
 Currently, it is not possible for the SDK to distinguish between the user calling `Debug.LogException` and the SDK capturing an unhandled exception. To capture an exception and mark it as handled you can call `SentrySDK.CaptureException` instead.
 
+### Line Numbers Missing when Building with Mono
+
+When building with Mono, make sure to set the `ManagedStrippingLevel` to `None`. Otherwise, Unity will strip the debug information from the assembly, which will cause the SDK to fail to retrieve the debug ID that allows connecting the assembly to the correct debug symbols for symbolication.
+
 ### C++ as Part of the Stack Trace
 
 Your stack traces might contain C++ frames. This might be because: