[dart2wasm] Trivial fix for `Int8List`.

Change-Id: I352b1d7522dfe2d3f4570e0f4a379ddf883d170a
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/264264
Auto-Submit: Joshua Litt <joshualitt@google.com>
Reviewed-by: Ömer Ağacan <omersa@google.com>
Commit-Queue: Ömer Ağacan <omersa@google.com>
diff --git a/sdk/lib/_internal/vm/lib/typed_data_patch.dart b/sdk/lib/_internal/vm/lib/typed_data_patch.dart
index 9e2f381..08db168 100644
--- a/sdk/lib/_internal/vm/lib/typed_data_patch.dart
+++ b/sdk/lib/_internal/vm/lib/typed_data_patch.dart
@@ -2176,6 +2176,7 @@
 }
 
 @pragma("vm:entry-point")
+@pragma("wasm:entry-point")
 class _Int8List extends _TypedList
     with _IntListMixin, _TypedIntListMixin<Int8List>
     implements Int8List {