Add isRosa flag to source code located at:

src/components/osd/ClusterSettings/Details/VersionSelectField.tsx

Please see isRosa flag usage in:

Cluster Settings -> Details

https://gitlab.cee.redhat.com/service/uhc-portal/blob/main/src/components/clusters/CreateOSDPage/CreateOSDForm/FormSections/BasicFieldsSection/VersionSelection/VersionSelection.jsx#L23-23

• getInstallableVersions(isRosa);
• disable versions earlier than rosaMaxOSVersion
• set default selection to first rosa.enabled version