Replace custom JSON hook with is_document for DashboardBody (#67)

## Summary

Replaces the custom delta_pre_compare hook and hand-written JSON comparison code with the standard is_document: true generator annotation for Dashboard.DashboardBody.

## Problem

The DashboardBody field accepts a JSON document. Previously this was handled by a custom delta_pre_compare hook with a compareDashboardBody function that performed JSON unmarshal + reflect.DeepEqual. This worked but duplicated functionality that the runtime already provides via the is_document annotation.

## Changes

- Added is_document: true to Dashboard.DashboardBody in generator.yaml
- Removed compare.is_ignored: true (no longer needed since the annotation handles comparison)
- Removed templates/hooks/dashboard/delta_pre_compare.go.tpl
- Removed pkg/resource/dashboard/hooks.go (custom compareDashboardBody and compareJSONObjects functions)
- Regenerated controller code — delta.go now uses the runtime's DocumentEqual function

## Testing

- go build ./cmd/controller — compiles cleanly
- Existing e2e test (dashboard.yaml fixture) already exercises dashboardBody with JSON content
- Behavior is unchanged: both approaches perform semantic JSON comparison

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

Author: gustavodiaz7722

apis/v1alpha1/ack-generate-metadata.yaml

@@ -1,13 +1,13 @@
 ack_generate_info:
-  build_date: "2026-05-19T18:44:39Z"
-  build_hash: e581e886276bd781409a3fb11fa665ea31de17d4
-  go_version: go1.26.3
-  version: v0.59.1
+  build_date: "2026-06-19T03:38:09Z"
+  build_hash: 2970ca9b3789515150e27ab80630175a8c77cba4
+  go_version: go1.26.0
+  version: v0.59.1-7-g2970ca9
 api_directory_checksum: 875e21de9852e490d33fd9e0e28e54153a267f81
 api_version: v1alpha1
 aws_sdk_go_version: v1.32.6
 generator_config_info:
-  file_checksum: 47fa5817a145eb10af67b5411707f83179c04035
+  file_checksum: f48b7ef48b1083851cd351747e6e31888a040dcc
   original_file_name: generator.yaml
 last_modification:
   reason: API generation

apis/v1alpha1/generator.yaml

@@ -64,15 +64,12 @@ resources:
         is_primary_key: true
         is_required: true
       DashboardBody:
-        compare:
-          is_ignored: true
+        is_document: true
         is_required: true
       DashboardArn:
         is_read_only: true
 
     hooks:
-      delta_pre_compare:
-        template_path: hooks/dashboard/delta_pre_compare.go.tpl
       sdk_delete_post_build_request:
         template_path: hooks/dashboard/sdk_delete_post_build_request.go.tpl
     exceptions:

generator.yaml

@@ -64,15 +64,12 @@ resources:
         is_primary_key: true
         is_required: true
       DashboardBody:
-        compare:
-          is_ignored: true
+        is_document: true
         is_required: true
       DashboardArn:
         is_read_only: true
 
     hooks:
-      delta_pre_compare:
-        template_path: hooks/dashboard/delta_pre_compare.go.tpl
       sdk_delete_post_build_request:
         template_path: hooks/dashboard/sdk_delete_post_build_request.go.tpl
     exceptions: