[dagit] Link to run config from Queued tab

Summary: On the "Queued" tab, display a small callout linking to the queue configuration section of the "Instance status" page.

Test Plan: View "Queued" tab, verify rendering and behavior.

Reviewers: johann, prha, dgibson

Reviewed By: prha

Differential Revision: https://dagster.phacility.com/D5915