New UI: Update bmm-workflow-status.yaml to specify documentation for design phase

- Changed the 'create-design' entry in the workflow status from 'conditional' to the path of the UX design specification document, ensuring clarity on the required documentation for this phase.

Author: adam0white

bmm-workflow-status.yaml

@@ -38,7 +38,7 @@ workflow_status:
   prd: project-brief.md
   validate-prd: skipped
   create-epics-and-stories: docs/epics.md
-  create-design: conditional
+  create-design: docs/ux-design-specification.md
 
   # Phase 3: Solutioning
   create-architecture: docs/architecture.md