BOLT-1594 followup: fix CodeRabbit review comments on tickets resolver

Address 2 CodeRabbit findings on merged PR #13494 (apps/dashboard/lib/boards/resolve/operations/tickets.ts): (1) residual filterRows applied after page-1 pagination silently loses matches on later pages -> fail closed with no_backend_mapping when residual present instead of in-memory filtering post-pagination; (2) LIST_ENUM_FIELDS (status/priority) tryPushCondition unions repeated eq/in conditions on the same field as an OR-membership array, which is wrong when two separate AND conditions on the same enum field should represent an impossible intersection -> fail closed (residual) on a second write to the same list-enum slot instead of unioning. New branch off main, new PR, linked to BOLT-1594.