fix #26812, function types should support the call method

pkg/analyzer/test/src/task/strong/checker_test.dart

Index: pkg/analyzer/test/src/task/strong/checker_test.dart
diff --git a/pkg/analyzer/test/src/task/strong/checker_test.dart b/pkg/analyzer/test/src/task/strong/checker_test.dart
index e7d7de055ed1ccee032683a750390178711e3253..591404044b649aaee6d77abf0e7a44eaa441e293 100644
--- a/pkg/analyzer/test/src/task/strong/checker_test.dart
+++ b/pkg/analyzer/test/src/task/strong/checker_test.dart
@@ -113,6 +113,15 @@ test() {
 ''');
   }
 
+  void test_callMethodOnFunctions() {
+    checkFile(r'''
+void f(int x) => print(x);
+main() {
+  f.call(/*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/'hi');
+}
+    ''');
+  }
+
   void test_castsInConditions() {
     checkFile('''
 main() {