Search page follow-up improvements

[Memo-Es]

Now that the new search experience is live at opencollective.com/search, there are a couple of improvements to complete, and I wanted to bundle them all in an issue, so they don't get lost:

• Cards in Search should say who the fiscal host is #5675
• Change Tag Design In /search Page #5622
• Improve Partial Searches of Multiple Words #5449
• Change card layout of the search page to the one that the old discovery page had #5714

cc @SudharakaP

[kaylarep]

• Long-term strategy for search #5809
• Improve search with multiple tag selection #2232 (comment)
• Broken search cards layout when too many/long tags #5751
• Add more tests to searchCollectivesInDB function #5530
• Automatically suggest & autocomplete tags in StyledInputTags component #5523
• Add Further Filtering for the /search page #5793

[Betree]

• Searching for a term with spaces should return spaceless results #5811