renaming theme using a space breaks project.

I created a theme for a demo (https://connect.nuxeo.com/nuxeo/site/studio/ide?project=cal-dir) calDir. I deployed the project to my aws instance. all good.

I wanted to rename the theme to something more user friendly. when I tried to change the name to `Cal DIR` the project broke.

Studio version 2024.0.0-11-g0aed1fe5-master

Steps to reproduce:

• Go to Studio Designer
• Go to themes
• Create a theme named my-theme using default as a basis
• Save the theme
• Go to resources tab
• Select the theme (in the themes folder)
• Click the "move" action
• Rename theme to "my theme" (with a space)

=> project is broken

Expected: studio should handle properly a theme with a space in its name (best solution) OR spaces should be disallowed for themes (fallback solution)