Page reload on search result page fires the search preview request

[kulmann]

Describe the bug

Being on the search result page and having a search term in the search input field fires the preview search request although the search dropdown doesn't show at all.

Steps to reproduce

1. Enter any phrase into the search input field in the topbar
2. Hit enter (= navigate to the search result page)
3. Do a page reload
4. Have a look at the network tab in the browser dev tools

Expected behavior

Only the full search request (REPORT to /dav/spaces) is executed. The preview search request (for the search input dropdown) only gets executed if the dropdown is supposed to become visible).

Actual behavior

The preview search request (the one that is executed upon opening/showing the search dropdown with the search result preview) gets executed as well, although the dropdown never shows at all.

[kulmann]

@jacob-nv could you have a look at this?

[JammingBen]

Fixed via #10232.