[GS] avoid unnecessary /internal/global_search/find http call at startup

[pgayvallet]

The debounce call the SearchBar component is using does not check if the searchbar is currently active / focused

kibana/x-pack/plugins/global_search_bar/public/components/search_bar.tsx

Lines 100 to 101 in 559853e

	useDebounce(
	() => {

This is causing an unnecessary call to /internal/global_search/find when the kibana starts on the client-side, for every users.

[elasticmachine]

Pinging @elastic/kibana-core-ui (Team:Core UI)

[myasonik]

So one benefit of this route is that the results are already loaded by the time a user focuses on the search bar.

Is the extra call a problem?

[pgayvallet]

Even if minor, performance-wise, that's an extra, potentially useless if the user never uses the feature, call that is performed during a timeframe already crawled with http calls (start lifecycle), so it would be an improvement to remove it.

Note that this issue would be resolved by addressing #78771, if we decide to fetch the apps for the default/initial result listing from the application service instead of calling GS.