When clicking on Commons automatically check namespace "File" by default

[prototyperspective]

This a really big problem with the tool that probably gets most people looking to use this for Wikimedia Commons to stop trying to get it to work before they ever got started with it or wondering why it always returns:

0 results Category/templates search was run but returned no results. You might want to check the parameters

They can still change the default by going to the tab "Page properties" which has a very large amount of checkboxes and textboxes and changing which namespaces are checked. People new to this tool, that is everyone at some point, are very unlikely to ever go to the advanced tabs when they only want to give it a try.

I don't know if anybody ever uses this for namespaces other than "File".

The first checkbox is checked by default and can't be disabled but does not have a label. I guess it means "Article" when using this for Wikipedia. Similarly, "File" would be the namespace checked by default when using this for Commons (when clicking on "Commons").