feat: use Cascader component that will be released in v7.5.0

[vickyyyyyyy]

We need the latest updates to the Cascader component from these PRs:

• Grafana/ui: display all selected levels for Cascader grafana#31729
• Grafana/ui: fix searchable options for Cascader with options update grafana#31906

but we don't want to have to bump the minimum required Grafana version to 7.5.0, where it will be released.

More info in README

[srclosson]

Not sue what feedback you are looking for. I think it looks great. Lots of tests, storybook, documentation... Maybe a a few commented lines that could be removed? But it looks excellent!

[vickyyyyyyy]

Not sue what feedback you are looking for. I think it looks great. Lots of tests, storybook, documentation... Maybe a a few commented lines that could be removed? But it looks excellent!

Whether this approach of us adding the components into this project seems good over the canary release solution (and any other possible solutions/workarounds we could use)? And if the added details in the README make sense or if I've missed anything out? 😄

[srclosson]

Yup, read through the readme, and I think it's great. You understand the problem well, and make it clear when to use ui-enterprise. I like that you set expectations around the lifecycle of a component, explaining that it's a requirement to eventually have it merged into grafana-ui, and when it is, what the contributor should do for the code. 👍

[srclosson]

LGTM 🔥