Upgrade react-select

[krishnaglick]

Our react-select library is one major version out of date, and we rely on a @types library which isn't wholly accurate. Notably we have a @ts-expect-error within our usage of it because the types are overly-specific and incorrect.

We should upgrade to the latest react-select (5.4.0 at the time of writing) which does not require an @types library and fix the bugs that occur.

We have certain usages wrapped up in styled components and we should remove the usage of styled-components.

I expect this to be a non-trivial upgrade. Migration guide

[octavia-squidington-iii]

cc @airbytehq/frontend

[krishnaglick]

Removing styled components from this blew the upgrade well out of scope. See #16439 for that work.