feat(s3): Event Bridge notification can be enabled after the bucket is created (#20913)

Make `enableEventBridgeNotification()` public and available in `IBucket`.

Unmanaged buckets can also have the notification enabled.

Fixes #20824.


----

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

Author: otaviomacedo

packages/@aws-cdk/aws-s3/lib/bucket.ts

@@ -353,6 +353,23 @@ export interface IBucket extends IResource {
    * @param filters Filters (see onEvent)
    */
   addObjectRemovedNotification(dest: IBucketNotificationDestination, ...filters: NotificationKeyFilter[]): void;
+
+
+  /**
+   * Enables event bridge notification, causing all events below to be sent to EventBridge:
+   *
+   * - Object Deleted (DeleteObject)
+   * - Object Deleted (Lifecycle expiration)
+   * - Object Restore Initiated
+   * - Object Restore Completed
+   * - Object Restore Expired
+   * - Object Storage Class Changed
+   * - Object Access Tier Changed
+   * - Object ACL Updated
+   * - Object Tags Added
+   * - Object Tags Deleted
+   */
+  enableEventBridgeNotification(): void;
 }
 
 /**
@@ -874,7 +891,21 @@ export abstract class BucketBase extends Resource implements IBucket {
     return this.addEventNotification(EventType.OBJECT_REMOVED, dest, ...filters);
   }
 
-  protected enableEventBridgeNotification() {
+  /**
+   * Enables event bridge notification, causing all events below to be sent to EventBridge:
+   *
+   * - Object Deleted (DeleteObject)
+   * - Object Deleted (Lifecycle expiration)
+   * - Object Restore Initiated
+   * - Object Restore Completed
+   * - Object Restore Expired
+   * - Object Storage Class Changed
+   * - Object Access Tier Changed
+   * - Object ACL Updated
+   * - Object Tags Added
+   * - Object Tags Deleted
+   */
+  public enableEventBridgeNotification() {
     this.withNotifications(notifications => notifications.enableEventBridgeNotification());
   }
 

packages/@aws-cdk/aws-s3/test/bucket.test.ts

@@ -2743,4 +2743,16 @@ describe('bucket', () => {
       },
     });
   });
+
+  test('Event Bridge notification can be enabled after the bucket is created', () => {
+    const stack = new cdk.Stack();
+    const bucket = new s3.Bucket(stack, 'MyBucket');
+    bucket.enableEventBridgeNotification();
+
+    Template.fromStack(stack).hasResourceProperties('Custom::S3BucketNotifications', {
+      NotificationConfiguration: {
+        EventBridgeConfiguration: {},
+      },
+    });
+  });
 });