fix(search): hide "No query, no results" on server

[caugner]

Summary

Fixes #4006.

Problem

When opening the full-text search, a "No query, no results" message appears shortly, because the query is empty during server-side rendering.

Solution

Hide the message during server-side rendering.

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How did you test this change?

Ran yarn dev and opened http://localhost:3000/en-US/search/?q=html with the internet connection slowed down via DevTools.