Issue 25657. Update offsets of cloned constant initializers.

pkg/analyzer/test/generated/incremental_resolver_test.dart

Index: pkg/analyzer/test/generated/incremental_resolver_test.dart
diff --git a/pkg/analyzer/test/generated/incremental_resolver_test.dart b/pkg/analyzer/test/generated/incremental_resolver_test.dart
index 823c0456f3b24e3bd30b7ebd1126ec2272c76db4..a5407ed31ea7874fc2d670118deeea26e1f77ce6 100644
--- a/pkg/analyzer/test/generated/incremental_resolver_test.dart
+++ b/pkg/analyzer/test/generated/incremental_resolver_test.dart
@@ -4544,6 +4544,19 @@ class A {
     expect(errors, isEmpty);
   }
 
+  void test_updateConstantInitializer() {
+    _resolveUnit(r'''
+main() {
+  const v = const [Unknown];
+}
+''');
+    _updateAndValidate(r'''
+main() {
+   const v = const [Unknown];
+}
+''');
+  }
+
   void test_updateErrors_addNew_hint1() {
     _resolveUnit(r'''
 int main() {