add GHAE to the "next" version exception so we do not throw an error

Author: sarahs

lib/check-if-next-version-only.js

@@ -1,14 +1,17 @@
 import { next, latest } from './enterprise-server-releases.js'
 import versionSatisfiesRange from './version-satisfies-range.js'
 
-// Special handling for frontmatter that evalues to the next GHES release number or a hardcoded `next`:
-// we don't want to return it as an applicable version or it will become a permalink,
-// but we also don't want to throw an error if no other versions are found.
+// Special handling for frontmatter that evalues to the next GHES release number,
+// GHAE `issue-\d{4}` or a hardcoded `next`. We don't want to return any of these
+// as an applicable version or it will become a permalink, but we also don't want
+// to throw an error if no other versions are found.
 export default function checkIfNextVersionOnly(value) {
   if (value === '*') return false
 
-  const ghesNextVersionOnly =
+  const ghesNextVersion =
     versionSatisfiesRange(next, value) && !versionSatisfiesRange(latest, value)
 
-  return ghesNextVersionOnly || value === 'next'
+  const ghaeUpcomingVersion = value.includes('issue-')
+
+  return ghesNextVersion || ghaeUpcomingVersion || value === 'next'
 }