CreateImageWizard: refactor oscap availability

Refactor the OpenSCAP on-premise availability check. Add the check to
the component so we run the check everytime the step is loaded. The
benefits to this is that if the user installs the packages, they won't
need to reload the page to use the OpenSCAP step. The downside is that
the check is not very quick, so a spinner was added just to indicate
that the check is running.

src/Components/CreateImageWizard/steps/Oscap/OnPremSpinner.tsx

@@ -0,0 +1,18 @@
+import React from 'react';
+
+import { Form, FormGroup, Spinner, Title } from '@patternfly/react-core';
+
+const OscapOnPremSpinner = () => {
+  return (
+    <Form>
+      <Title headingLevel="h1" size="xl">
+        OpenSCAP profile
+      </Title>
+      <FormGroup>
+        <Spinner size="xl" />
+      </FormGroup>
+    </Form>
+  );
+};
+
+export default OscapOnPremSpinner;

src/Components/CreateImageWizard/steps/Oscap/index.tsx

@@ -10,6 +10,8 @@ import {
 } from '@patternfly/react-core';
 import { ExternalLinkAltIcon } from '@patternfly/react-icons';
 
+import OscapOnPremSpinner from './OnPremSpinner';
+import OscapOnPremWarning from './OnPremWarning';
 import { Oscap, removeBetaFromRelease } from './Oscap';
 
 import {
@@ -36,8 +38,9 @@ import {
   clearKernelAppend,
 } from '../../../../store/wizardSlice';
 import { useFlag } from '../../../../Utilities/useGetEnvironment';
+import { useOnPremOpenSCAPAvailable } from '../../../../Utilities/useOnPremOpenSCAP';
 
-const OscapStep = () => {
+const OscapContent = () => {
   const dispatch = useAppDispatch();
   const complianceEnabled = useFlag('image-builder.compliance.enabled');
   const complianceType = useAppSelector(selectComplianceType);
@@ -159,4 +162,20 @@ const OscapStep = () => {
   );
 };
 
+const OnPremOscapStep = () => {
+  const [onPremOpenSCAPAvailable, isLoading] = useOnPremOpenSCAPAvailable();
+
+  if (isLoading) {
+    return <OscapOnPremSpinner />;
+  }
+
+  if (!onPremOpenSCAPAvailable) {
+    return <OscapOnPremWarning />;
+  }
+
+  return <OscapContent />;
+};
+
+const OscapStep = process.env.IS_ON_PREMISE ? OnPremOscapStep : OscapContent;
+
 export default OscapStep;