How can I disable the "All" option that appears by default in the filter dropdown?

Question:
How can I disable the “All” option that appears by default in the filter dropdown?

Product:
Wix Studio

What are you trying to achieve:
I need to disable the “All” option that appears by default.

What have you already tried:

Additional information:
Actually the “All option” does not work at all since it returns no results.