Expand filtering options in AI idea exploration

In this use case, ideas for multiple products are gathered in a single portal and linked to a single workspace for triaging. The team wants to filter the exploration view by custom fields. In particular, these are custom fields created for product groups, teams, as well as various other tags fields related to the how work is planned and organized. As an example, the team will want to see all ideas related to a specific team for a subset of product groups (not workspaces in this use case).