Fix breadcrumb navigation for work items in project issues

Vedant Jainrequested to merge
vj/issue#569108 into master

What does this MR do and why?

Fix breadcrumb navigation for work items in project issues

Replace workItemsAlpha flag with isWorkItemProjectIssuesList to control client-side routing in breadcrumb navigation, ensuring consistent behavior between Issues and Epics pages when work items list is enabled.

Changelog: added

References

Relates to #569108 (closed)

Screenshots or screen recordings

Screen_Recording_2025-09-09_at_3.36.10_PM Screen_Recording_2025-09-09_at_3.37.00_PM
Legacy issues list Work item project issues list

How to set up and validate locally

  • Navigate to a project with work items list enabled
  • Go to the Issues page
  • Open any issue in the drawer
  • Switch to full view
  • Click on the "Issues" breadcrumb

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