Hide href attribute of a tag if there is no target_url (#34556)

Relate #34450

Author: lunny

web_src/js/components/DashboardRepoList.vue

@@ -429,7 +429,7 @@ export default defineComponent({
                 <svg-icon name="octicon-archive" :size="16"/>
               </div>
             </a>
-            <a class="tw-flex tw-items-center" v-if="repo.latest_commit_status_state" :href="repo.latest_commit_status_state_link" :data-tooltip-content="repo.locale_latest_commit_status_state">
+            <a class="tw-flex tw-items-center" v-if="repo.latest_commit_status_state" :href="repo.latest_commit_status_state_link || null" :data-tooltip-content="repo.locale_latest_commit_status_state">
               <!-- the commit status icon logic is taken from templates/repo/commit_status.tmpl -->
               <svg-icon :name="statusIcon(repo.latest_commit_status_state)" :class="'tw-ml-2 commit-status icon text ' + statusColor(repo.latest_commit_status_state)" :size="16"/>
             </a>