docs(flutter): Document Flutter web limitations

docs/platforms/flutter/features/index.mdx

@@ -34,3 +34,14 @@ Sentry's Flutter SDK enables automatic reporting of errors and exceptions, and i
 - [Profiling](/platforms/flutter/profiling/) collects detailed information about your code at the function level.
 - [Source Context](/platforms/flutter/data-management/debug-files/source-context/) shows snippets of code around the location of stack frames.
 - [Sentry Dart Plugin](/platforms/flutter/upload-debug/) makes uploading debug symbols easy and automatic.
+
+**Web Limitations:**
+
+Sentry supports Flutter Web as well, with the following limitations:
+
+- Issue titles are not human-readable, as they show the minified name.
+- Stack traces aren't symbolicated when compiled using WebAssembly (WASM).
+- Stack traces are not symbolicated when loaded as a browser extension.
+- Offline caching isn't supported for exceptions.
+- [Release Health](/product/releases/health/) isn't supported.
+- Device context data isn't as rich on the web as it is on mobile.