Allow router navigation for children

If the child item link is displayed in the drawer
use Vue Router to navigate to it

app/assets/javascripts/work_items/components/work_item_detail.vue

@@ -864,6 +864,7 @@ export default {
               :can-update-children="canUpdateChildren"
               :confidential="workItem.confidential"
               :allowed-child-types="allowedChildTypes"
+              :is-drawer="isDrawer"
               @show-modal="openInModal"
               @addChild="$emit('addChild')"
               @childrenLoaded="hasChildren = $event"

app/assets/javascripts/work_items/components/work_item_links/work_item_tree.vue

@@ -49,8 +49,10 @@ export default {
     WorkItemRolledUpData,
   },
   inject: ['hasSubepicsFeature'],
-  provide: {
-    [INJECTION_LINK_CHILD_PREVENT_ROUTER_NAVIGATION]: true,
+  provide() {
+    return {
+      [INJECTION_LINK_CHILD_PREVENT_ROUTER_NAVIGATION]: !this.isDrawer,
+    };
   },
   props: {
     fullPath: {
@@ -100,6 +102,11 @@ export default {
       required: false,
       default: () => [],
     },
+    isDrawer: {
+      type: Boolean,
+      required: false,
+      default: false,
+    },
   },
   data() {
     return {

app/assets/javascripts/work_items/constants.js

@@ -373,4 +373,6 @@ export const WORKITEM_LINKS_SHOWLABELS_LOCALSTORAGEKEY = 'workItemLinks.showLabe
 export const WORKITEM_TREE_SHOWLABELS_LOCALSTORAGEKEY = 'workItemTree.showLabels';
 export const WORKITEM_RELATIONSHIPS_SHOWLABELS_LOCALSTORAGEKEY = 'workItemRelationships.showLabels';
 
-export const INJECTION_LINK_CHILD_PREVENT_ROUTER_NAVIGATION = 'injection:prevent-router-navigation';
+export const INJECTION_LINK_CHILD_PREVENT_ROUTER_NAVIGATION = Symbol(
+  'injection:prevent-router-navigation',
+);