Creating an entity from within the Relationships Tree goes to an empty window

[RafaPolit]

Describe the bug
If you try to create an entity inside the Relationships Tree, you are brought to an empty window

To Reproduce
Steps to reproduce the behavior:

1. Create a single entity
2. Go into its relationship tree
3. Try to create a hub with relationship types, and ADD a new entity (instead of trying to search for one)
4. Click Save
5. Watch the Uwazi Screen go to a blank window

Expected behavior
The entity should get created and added to the current tree, or at least be able to be selected

[txau]

@RafaPolit blank window with any message on the console? Or no error at all?

[RafaPolit]

This is the resulting screen:

No apparent errors. I believe the front end is re-rendering as if you were viewing the root of the entity. The problem is that you cannot click on save on the relationship tree as it is no longer in view.

This should probably have an e2e created as it is a fairly vulnerable spot.