[WIP] Fix for HasManyThrough

[tychokamphuis-aqqo]

Edit: On second hand; This is not the currect solution. However, filtering on expanded HasManyThrough is still not working.

HasManyThrough relations were not filterable. To recreate this issue you can use the following database from the Laravel documentation:

projects
    id - integer
    name - string
 
environments
    id - integer
    project_id - integer
    name - string
 
deployments
    id - integer
    environment_id - integer
    commit_hash - string

When recreated the above, the following query returns all projects instead of a any with a commit hash.

http://127.0.0.1:8000/odata/Projects?$expand=Deployments($filter=commit_hash eq 'XXX')&$filter=Deployments/any(s:s/commit_hash eq 'XXX')