[Task] Add regression test for renaming untitled view

[Xazin]

Description

We recently changed behavior such that in some cases we create documents with empty names, these are still seen as "Untitled" by the user, in the rename dialog we made a fix to show the "Untitled" name instead of empty, we should make an integration test for this case such that we can know if it breaks in the future.

Impact

Future-proofing

Additional Context

No response