+ update parent range components to use the `onResize` callback instead of a ref callback

- the internal resize observer handles all of it, no need for all this extra shenanigans

- probably should've taken this approach in the first place

- remove `onResize` class ref - should no longer be needed in Kibana

- Honestly not sure how useful this is, but better to have something than nothing

- we should eventually replace with with visual snapshot tests

This reverts commit 7206b15.