Vuln Report: show identifiers with no URL as text

* Update view logic to only render a link when a vulnerability
  identifier has a url attached to it
* Update specs

ee/app/assets/javascripts/vulnerabilities/components/details.vue

@@ -282,9 +282,13 @@ export default {
           :key="`${index}:${identifier.url}`"
           class="gl-ml-0! gl-list-style-position-inside"
         >
-          <gl-link :href="identifier.url" data-testid="identifier" target="_blank">
+          <component
+            :is="identifier.url ? 'gl-link' : 'span'"
+            v-bind="identifier.url && { href: identifier.url, target: '_blank' }"
+            data-testid="identifier"
+          >
             {{ identifier.name }}
-          </gl-link>
+          </component>
         </li>
       </ul>
     </template>

ee/changelogs/unreleased/288755-vulnerability-identifier-shows-as-link-even-though-it-doesn-t-h.yml

+---
+title: 'Vulnerability Report: Show identifiers without URL as plain-text instead of
+  link'
+merge_request: 48653
+author:
+type: fixed

ee/spec/frontend/vulnerabilities/details_spec.js

@@ -88,23 +88,40 @@ describe('Vulnerability Details', () => {
   });
 
   it('shows the vulnerability identifiers if they exist', () => {
+    const identifiersData = [
+      { name: '00', url: 'http://example.com/00' },
+      { name: '11', url: 'http://example.com/11' },
+      { name: '22', url: 'http://example.com/22' },
+      { name: '33' },
+      { name: '44' },
+      { name: '55' },
+    ];
+
     createWrapper({
-      identifiers: [{ url: '0', name: '00' }, { url: '1', name: '11' }, { url: '2', name: '22' }],
+      identifiers: identifiersData,
     });
 
     const identifiers = getAllById('identifier');
-    expect(identifiers).toHaveLength(3);
 
-    const checkIdentifier = index => {
+    expect(identifiers).toHaveLength(identifiersData.length);
+
+    const checkIdentifier = ({ name, url }, index) => {
       const identifier = identifiers.at(index);
-      expect(identifier.attributes('target')).toBe('_blank');
-      expect(identifier.attributes('href')).toBe(index.toString());
-      expect(identifier.text()).toBe(`${index}${index}`);
+
+      expect(identifier.text()).toBe(name);
+
+      if (url) {
+        expect(identifier.is(GlLink)).toBe(true);
+        expect(identifier.attributes()).toMatchObject({
+          target: '_blank',
+          href: url,
+        });
+      } else {
+        expect(identifier.is(GlLink)).toBe(false);
+      }
     };
 
-    for (let i = 0; i < identifiers.length; i += 1) {
-      checkIdentifier(i);
-    }
+    identifiersData.forEach(checkIdentifier);
   });
 
   describe('file link', () => {