Resolve "Remove Security Dashboard router from pipelines view"

What does this MR do?

Removes the router from the Pipeline Security Dashboard.

This also removes the coupling between the Security Dashboard store and the router. Previously, the store was always instantiated with the (singleton) router, and bound to it. Now, the router must be created and bound to the store explicitly.

Screenshots

N/A; the Pipeline Security Dashboard will simply no longer add query parameters to the page URL.

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• [-] Documentation created/updated or follow-up review issue created
• Code review guidelines
• [-] Merge request performance guidelines
• Style guides
• [-] Database guides
• Separation of EE specific content

Performance and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• [-] Tested in all supported browsers