Add the ability to filter suggestions in the Parent field by specific issue types (e.g., view only Epic suggestions) within the Issue Search Navigation in basic search.

With the unification of various parent-child relationship fields into a single Parent field, Jira users now experience a broader range of options when filtering by parent. This change, while beneficial for consistency and flexibility, has introduced a challenge for users who need to filter specifically by Epic (or other specific issue types). Previously, the Epic Link field allowed users to filter exclusively by Epics, but with its deprecation, there is no equivalent functionality in the Parent field.