Fix missing filters on associated Reports Hub collections

Fix Reports Hub so associated collections reliably expose their filters when building related reports.

Transcript Context

The discussion described a recurring problem where the first collection in a report shows its filters, but an associated collection does not. A specific example mentioned was seeing "inspection filters" or "inspector filters" headings with no fields underneath them. Because of that, the team cannot apply the filters they need across related data sets and ends up exporting to Excel to clean up the results manually.

This came up while trying to relate quotes and inspections and when trying to build duplicate-order analysis. The team said some combinations work and others do not, but the repeated failure mode is that associated collections lose their filter controls instead of exposing them consistently.