Missing border styles for select menu

[jgiardino]

There's an issue with how border styles are being rendered in the UI:

We had a similar issue with Kafka, and this is how we fixed it:
https://github.com/bf2fc6cc711aee1a0c2a/kas-ui/blob/961a29f15b0d3e46e5aab64bec77b8a3eae053f5/src/app/modules/OpenshiftStreams/components/StreamsTableView/StreamsToolbar.css#L13

However I also reached out to the UXD dev team to see if this has come up before, and they shared this issue that has some other suggestions:
patternfly/patternfly-react#5650 (comment)