add UNDEFINED_EXTENSION_GETTER to bulk fix

Following up on #49164 this PR allows rename in extensions via `dart fix`

Closes https://github.com/dart-lang/sdk/pull/49200

GitOrigin-RevId: a5af8d05f4d9bf849e8115cc780b17bce18d0d50
Change-Id: I845848901768ff48746a0438b009f631c5d03a7e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/247460
Commit-Queue: Brian Wilkerson <brianwilkerson@google.com>
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>

pkg/analysis_server/lib/src/services/correction/bulk_fix_processor.dart

diff --git a/pkg/analysis_server/lib/src/services/correction/bulk_fix_processor.dart b/pkg/analysis_server/lib/src/services/correction/bulk_fix_processor.dart
index 05fdc77..276a876 100644
--- a/pkg/analysis_server/lib/src/services/correction/bulk_fix_processor.dart
+++ b/pkg/analysis_server/lib/src/services/correction/bulk_fix_processor.dart
@@ -78,6 +78,9 @@
     CompileTimeErrorCode.UNDEFINED_CLASS: [
       DataDriven.new,
     ],
+    CompileTimeErrorCode.UNDEFINED_EXTENSION_GETTER: [
+      DataDriven.new,
+    ],
     CompileTimeErrorCode.UNDEFINED_FUNCTION: [
       DataDriven.new,
     ],