Docs add sidebar to blueprints bundles (#2397)

## Motivation for the change, related issues

### before
<img width="1600" height="900" alt="before"
src="https://github.com/user-attachments/assets/d355ad2d-c655-4673-91a4-977de7f41554"
/>

https://wordpress.github.io/wordpress-playground/blueprints/bundles

### after
<img width="1600" height="900" alt="after"
src="https://github.com/user-attachments/assets/f0ba505a-3efb-4e68-a081-35eb769e23b6"
/>


## Implementation details
Add sidebar to blueprints bundles

Co-authored-by: Fellyph Cintra <[email protected]>

Author: shimotmk

packages/docs/site/sidebars.js

@@ -110,7 +110,7 @@ const sidebars = {
 						'blueprints/json-api-and-function-api',
 					],
 				},
-
+				'blueprints/bundles',
 				'blueprints/examples',
 				'blueprints/troubleshoot-and-debug-blueprints',
 			],