feat: [documentai] Added a field for enabling image and table annotation for layout parser processor (#7318)

- [ ] Regenerate this pull request now.

PiperOrigin-RevId: 877500954

Source-Link: https://togithub.com/googleapis/googleapis/commit/aa40d20bf5f2386cd39045bcefea48334017258d

Source-Link: https://togithub.com/googleapis/googleapis-gen/commit/9a5ddacb78bb927694274c8f642c405b0b18202a
Copy-Tag: eyJwIjoicGFja2FnZXMvZ29vZ2xlLWNsb3VkLWRvY3VtZW50YWkvLk93bEJvdC55YW1sIiwiaCI6IjlhNWRkYWNiNzhiYjkyNzY5NDI3NGM4ZjY0MmM0MDViMGIxODIwMmEifQ==

Author: gcf-owl-bot[bot]

packages/google-cloud-documentai/protos/google/cloud/documentai/v1/document_processor_service.proto

@@ -1,4 +1,4 @@
-// Copyright 2025 Google LLC
+// Copyright 2026 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -354,6 +354,12 @@ message ProcessOptions {
     // Optional. Whether to include bounding boxes in layout parser processor
     // response.
     bool return_bounding_boxes = 3 [(google.api.field_behavior) = OPTIONAL];
+
+    // Optional. Whether to include image annotations in layout parser response.
+    bool enable_image_annotation = 4 [(google.api.field_behavior) = OPTIONAL];
+
+    // Optional. Whether to include table annotations in layout parser response.
+    bool enable_table_annotation = 6 [(google.api.field_behavior) = OPTIONAL];
   }
 
   // A list of individual page numbers.