fix(llc): Fixed build in dart2wasm environment

According to https://dart.dev/interop/js-interop/past-js-interop
we should now "prefer using dart:js_interop going forwards and
migrate usages of old interop libraries when possible" and this
change does that in order to make the library compatible with
`--wasm` builds.

Author: ebraminio

packages/stream_chat/CHANGELOG.md

@@ -7,6 +7,7 @@
 - Fixed `OwnUser` specific fields getting lost when creating a new `OwnUser` instance from
   an `User` instance.
 - Fixed `Client.currentUser` specific fields getting reset on `user.updated` events.
+- Fixed build in dart2wasm environment.
 
 ✅ Added
 

packages/stream_chat/lib/src/core/platform_detector/platform_detector.dart

@@ -1,5 +1,5 @@
 import 'package:stream_chat/src/core/platform_detector/platform_detector_stub.dart'
-    if (dart.library.html) 'platform_detector_web.dart'
+    if (dart.library.js_interop) 'platform_detector_web.dart'
     if (dart.library.io) 'platform_detector_io.dart';
 
 /// Possible platforms

packages/stream_chat_flutter/lib/src/attachment/handler/stream_attachment_handler.dart

@@ -1,4 +1,4 @@
 export 'stream_attachment_handler_base.dart'
-    if (dart.library.html) 'stream_attachment_handler_html.dart'
+    if (dart.library.js_interop) 'stream_attachment_handler_html.dart'
     if (dart.library.io) 'stream_attachment_handler_io.dart'
     show StreamAttachmentHandler;

packages/stream_chat_persistence/lib/src/db/shared/shared_db.dart

@@ -1,3 +1,3 @@
 export 'unsupported_db.dart'
     if (dart.library.io) 'native_db.dart' // implementation using dart:io
-    if (dart.library.html) 'web_db.dart';
+    if (dart.library.js_interop) 'web_db.dart';