[Reporting/Discover/Search Sessions] Only use relative time filter wh…

…en generating share data (#112588) (#112736)

* only use relative time filter when generating share data

* Added comment on absolute time filter.

Co-authored-by: Tim Sullivan <[email protected]>

* improve discover search session relative time range test

* update discover tests and types for passing in data plugin to getSharingData function

* updated reporting to pass in data plugin to getSharingData, also updates jest tests

Co-authored-by: Kibana Machine <[email protected]>
Co-authored-by: Tim Sullivan <[email protected]>
Co-authored-by: Anton Dosov <[email protected]>

Co-authored-by: Jean-Louis Leysens <[email protected]>
Co-authored-by: Tim Sullivan <[email protected]>
Co-authored-by: Anton Dosov <[email protected]>