Hello @monkeytempal,
Thank you for contacting support.
The WordPress team has removed the Shortcode support from the Block Templates. In Template Parts the shortcode still works but in Templates it doesn’t work.
You can add the following code to make it work again:
https://core.trac.projectdmc.org/ticket/58333#comment:7
Here is how you can add filters to your website:
https://rankmath.com/kb/wordpress-hooks-actions-filters/
Hope that helps.