Projects view shows every subfolder recursively

Describe the bug

The projects view does not show subfolders properly. It unrolls the folder tree, and shows all subfolders of subfolders. E.g. if the folder structure is

a/c
a/d
b/c

Then the projects view lists a,b,c,d. This is confusing if there are many subfolders and also leads to name clashes if there subfolders with the same name of different branches of the tree.

To reproduce

Create the folder structure above.

Expected behaviour

The project view only shows the direct subfolders, e.g. a and b on the top level.

Environment

• Self hosted
• ClearML SDK Version: 2.1.10
• ClearML Server Version: WebApp: 2.4.0-722 • Server: 2.4.0-722 • API: 2.35
• Python Version: 3.10.12
• OS: Linux