Code Insights: Sort and limit filters don't work as other filters

Created by: vovakulikov

Follow up for https://github.com/sourcegraph/sourcegraph/pull/34611

In general, we implemented the sort and limit filter section in a different way compared to other filter sections.

The problem

• You can't save "Sort and limit" filters until you changed something in other filters
• "Sort and limit" filters don't have a filter changed marker (purple dot next to the filter section title)
• "Default filter applied" is shown even if "Sort and limit" filters have been changed.

@AlicjaSuska Personal feedback (from @vovakulikov) it seems like we don't use space in this filters section in an optimal way, have we considered using a different layout for this section?