fix #26896, mark all @proxy ops as dynamic

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 43336713ecc174c0b6c2aec833c431854ca54ad0..d939285d09182e73753d315a7a4105e1ea005ff8 100644
--- a/pkg/analyzer/test/src/task/strong/checker_test.dart
+++ b/pkg/analyzer/test/src/task/strong/checker_test.dart
@@ -3014,6 +3014,26 @@ class Child extends helper.Base {
 ''');
   }
 
+  void test_proxy() {
+    checkFile(r'''
+@proxy class C {}
+@proxy class F implements Function { noSuchMethod(i) => 42; }
+
+m() {
+  C c = new C();
+  /*info:DYNAMIC_INVOKE*/c.m();
+  /*info:DYNAMIC_INVOKE*/c.m;
+  /*info:DYNAMIC_INVOKE*/-c;
+  /*info:DYNAMIC_INVOKE*/c + 7;
+  /*info:DYNAMIC_INVOKE*/c[7];
+  /*error:INVOCATION_OF_NON_FUNCTION,info:DYNAMIC_INVOKE*/c();
+
+  F f = new F();
+  /*info:DYNAMIC_INVOKE*/f();
+}
+    ''');
+  }
+
   void test_redirectingConstructor() {
     checkFile('''
 class A {