[dagit] Fix breadcrumbs for composite solids
When drilling into a composite solid, the breadcrumbs at the top of the dag explorer can break if the list gets too long.
Use the Blueprint Breadcrumbs component instead, which pushes items into a dropdown if there isn't enough width.
Test Plan: View composite pipeline, drill into solids. Verify proper breadcrumb collapsing and behavior, including when viewport is narrower.
Reviewers: bengotow, alangenfeld, catherinewu, sashank
Reviewed By: alangenfeld
Differential Revision: https://dagster.phacility.com/D4687