Reduce duplication introduced in `issuable_filters_present`
!6497 (merged) introduces a
issuable_filters_present helper that checks if any of the parameters used to filter Issuables are present. We then duplicate those keys in the
gitlab-ee!785 (merged) adds an extra layer by also checking for and duplicating the
These keys should be defined in one place and then both of these should just use that. Ideally we can add
:weight to the CE version and have parity between the two.