Summary

As per #203150 (comment), the useSearchSession shouldn't rely on search.session. The UI needs to have a context that can be used to control when requests will be made and to force requests. Similar to APM's use_time_range_id_context, but using timestamp instead.

AC

• useSearchSession is renamed
• updateSearchSessionId is renamed
• useSearchSession doesn't use search.session nor creates a dependency on the UI with searchSessionId
• searchSessionId is replaced with lastReloadRequestTime on usages of lens embeddable
• useFetcher no longer uses searchSessionId but the new variable.