Support worker runs with a version not linked to a revision in the details modal

src/components/Process/Workers/WorkerRuns/WorkerRunDetails.vue

@@ -17,26 +17,32 @@
             <strong>Name: </strong>
             {{ workerRun.worker_version.worker.name || '—' }}
           </p>
-          <p>
-            <strong>Git references: </strong>
-            <template v-if="workerRun.worker_version.revision.refs.length">
-              <span
-                class="tag is-light mx-1"
-                :class="refsClass(item.type)"
-                v-for="item in workerRun.worker_version.revision.refs"
-                :key="item.id"
-              >{{ item.name }}</span>
-            </template>
-            <template v-else>—</template>
-          </p>
-          <p>
-            <strong>Git revision: </strong>
-            <a
-              :href="workerRun.worker_version.revision.commit_url"
-              target="_blank"
-            >
-              <samp>{{ workerRun.worker_version.revision.hash.slice(0, 8) }}</samp>
-            </a>
+          <template v-if="workerRun.worker_version.revision">
+            <p>
+              <strong>Git references: </strong>
+              <template v-if="workerRun.worker_version.revision.refs.length">
+                <span
+                  class="tag is-light mx-1"
+                  :class="refsClass(item.type)"
+                  v-for="item in workerRun.worker_version.revision.refs"
+                  :key="item.id"
+                >{{ item.name }}</span>
+              </template>
+              <template v-else>—</template>
+            </p>
+            <p>
+              <strong>Git revision: </strong>
+              <a
+                :href="workerRun.worker_version.revision.commit_url"
+                target="_blank"
+              >
+                <samp>{{ workerRun.worker_version.revision.hash.slice(0, 8) }}</samp>
+              </a>
+            </p>
+          </template>
+          <p v-else>
+            <strong>Version: </strong>
+            {{ workerRun.worker_version.version }}
           </p>
           <p class="mt-2">
             <strong>Worker version ID: </strong>