Analytics breadcrumbs collapse unnecessarily

Problem to solve

Due to (I think!) a recent change in the @gitlab/ui breadcrumbs component, our analytics breadcrumbs get unnecessarily collapsed:

breadcrumbs-collapse

This seems to be due to how the breadcrumbs calculate their container size. Our breadcrumbs are in a flex container and so the component does not see it has more space available.

Expected behaviour

All breadcrumbs are visible when there is plenty of free space.

Actual behaviour

Breadcrumbs collapse

Implementation plan

  • add flex-grow on analytics breadcrumbs so the actual available space is used