Error thrown when the data source context is rendered and it contains a service filter pointing to a trashed field.

1. Create a page.
2. Add a list data source
3. Add a filter on a Baserow field
4. Trash (don't permanently delete) the field.
5. Return to the page and try and open the data source context. The error below is thrown:

added application builder bug labels

created branch 2790-error-thrown-when-the-data-source-context-is-rendered-and-it-contains-a-service-filter to address this issue

mentioned in merge request !2512 (merged)

closed with merge request !2512 (merged)

mentioned in commit abe278e0