Stop infinitely recursive folder pane bug when adding query to URL

[megoth]

A bit related to https://github.com/solid/solid-panes/issues/62, but this is about the bug that you can expand the first item in the folder pane indefinitely, as shown in the above screenshot.

[megoth]

To reproduce this you need to have an extension-less file as the first entry in your list. This might be a rare edge-case, but I want to give it a go anyway 😸

[megoth]

The solution of this might be dependent on https://github.com/solid/solid-panes/issues/90, so will wait until we have a conclusion there.

[megoth]

Query values shouldn't be treated any special by the data browser, so we need to think a bit more on how this can be solved.

It is also a bit of an edge case for now, so we'll leave this until we have a better oversight of the code base.