[FEATURE] Maintain form contents across navigation for the Search Relevance tab

[Jon-AtAWS]

Is your feature request related to a problem?

Building queries in the Search Relevance tab is painful, partly because we lack auto-complete (different feature request). The natural solution is to build the query in the Dev Tools tab and copy-paste. However, navigating away from the Search Relevance tab clears all of the form content.

What solution would you like?

Autocomplete (same as with the Dev Tools tab) is the right overall solution. But there will be times when I'm forced to navigate to some other tab, and I'll lose what's in Search Relevance. Can we maintain the contents of the page across navigation actions?

What alternatives have you considered?

Build the queries first and copy-paste them at the same time.