* Add the initial test for the empty app db

* Add reproduction for #25142

* Add test that covers only saved questions

* Cover scenarios with a table as a source

* Add tests that cover nested questions and models

* Add test for simple model's source table

* Remove intercepted schema routes

* Improve assertion

* Fix the test failing on enterprise instance

* Add E2E reproduction for #40223

* Remove superfluous code block

* Avoid casting