Replace remaining deprecated, PatternFly Select component(s) to replace with the v5 version

There is currently only one remaining v4 Select component located here:

src/routes/settings/costModels/components/inputs/selector.tsx

There are a couple missing PatternFly features below, blocking this v5 update.

Depends on

• Validated
  • https://github.com/patternfly/patternfly-react/issues/10025
• Max height
  • https://github.com/patternfly/patternfly-react/issues/10024