Use MY MARKETS filter box for FIND MARKET search

Seaching for new assets can be unsuccessful, because you didn't switch from MY MARKETS to FIND MARKETS.

The search should first list the items in MY MARKETS and afterwards the items in FIND MARKETS with the option to add it to MY MARKETS.

Therefore no need to switch markets for extra search and prevent people from not finding new markets.

Start by locating the UI entry point for the MY MARKETS and FIND MARKETS filter boxes, then trace how market search results are assembled. Confirm that results from MY MARKETS appear first, followed by FIND MARKETS results with an option to add an item; the issue names no files or tests to run.

Written by the indexing model from the issue text.