fixes #27586, prefer context type in generic inference

tests/lib_strong/html/js_typed_interop_test.dart

Index: tests/lib_strong/html/js_typed_interop_test.dart
diff --git a/tests/lib_strong/html/js_typed_interop_test.dart b/tests/lib_strong/html/js_typed_interop_test.dart
index cae4b6faef044cc14cff0f461f88497552dc73be..1f8bd06f25e02f246ea9ec39d8ef58cc57e8fef4 100644
--- a/tests/lib_strong/html/js_typed_interop_test.dart
+++ b/tests/lib_strong/html/js_typed_interop_test.dart
@@ -316,8 +316,9 @@ main() {
     test('call from js', () {
       localClosure(x) => x * 10;
       var wrappedLocalClosure = allowInterop(localClosure);
+      var wrappedLocalClosure2 = allowInterop(localClosure);
       expect(
-          identical(allowInterop(localClosure), wrappedLocalClosure), isTrue);
+          identical(wrappedLocalClosure2, wrappedLocalClosure), isTrue);
       expect(foo.callClosureWithArg1(wrappedLocalClosure, 10), equals(100));
       expect(foo.callClosureWithArg1(wrappedLocalClosure, "a"),
           equals("aaaaaaaaaa"));