Untrack table not removing metadata files

### Version Information

Server Version: v2.6.2 (config v3)

### Environment

OSS

### What is the expected behaviour?

Clicking the "Untrack Table" button on "Data > Table > Modify" should additionally remove the referenced `metadata/databases/*/tables/*.yaml` files

### Keywords

untrack table, yaml, metadata, console

### What is the current behaviour?

While the `!include` array entries _are_ removed from `metadata/databases/*/tables/tables.yaml`, the referenced files are not removed

### How to reproduce the issue?

1. navigate to "Modify" tab of a table
2. click "Untrack Table" at the bottom

Start at the Data > Table > Modify view and trace the Untrack Table action. Check how it removes entries from metadata/databases/*/tables/tables.yaml and identify where referenced metadata/databases/*/tables/*.yaml files should also be removed. Done means both the include entries and referenced files are gone after untracking a table.

Written by the indexing model from the issue text.