SuperTable elements are not deleted along with a deleted entry

[mofman]

Describe the bug

We have a site where the database has become quite large (4gb uncompressed) it is starting to become an issue for us.

In effort to reduce the size of the db, we are deleting old expired entries. However we are noticing that dispite doing this it is having little effect on the size of the db, it seems like the supertable elements are remaining in craft_elements and craft_element_sites

Steps to reproduce

1. Delete an entry
2. Check if associated supertable elements are deleted from craft_elements and craft_element_sites tables

Craft CMS version

4.12.8

Plugin version

3.0.15

Multi-site?

No

Additional context

No response