Revert "use null instead of root."

This reverts commit bd68faa748.

src/Umbraco.Web.UI.Client/src/packages/templating/templates/entity-actions/create/create.action.ts

@@ -9,7 +9,7 @@ export class UmbCreateEntityAction<T extends { copy(): Promise<void> }> extends
 	// TODO: can we make this a generic create action
 	async execute() {
 		// TODO: get entity type from repository?
-		const url = `section/settings/workspace/template/create/${this.unique || 'null'}`;
+		const url = `section/settings/workspace/template/create/${this.unique || 'root'}`;
 		// TODO: how do we handle this with a href?
 		history.pushState(null, '', url);
 	}

src/Umbraco.Web.UI.Client/src/packages/templating/templates/workspace/template-workspace.context.ts

@@ -148,6 +148,7 @@ ${currentContent}`;
 				alias: template.alias,
 			});
 			this.repository.requestTreeItemsOf(this.#masterTemplate.value?.id ?? '');
+
 		}
 	}
 
@@ -156,7 +157,7 @@ ${currentContent}`;
 		if (!data) return;
 		this.setIsNew(true);
 		this.#data.next({ ...data, id: '', name: '', alias: '', $type: 'TemplateResponseModel' });
-		if (!parentId) return;
+		if (!parentId || parentId === 'root') return;
 		await this.setMasterTemplate(parentId);
 	}
 

src/Umbraco.Web.UI.Client/src/packages/templating/templates/workspace/template-workspace.element.ts

@@ -20,11 +20,11 @@ export class UmbTemplateWorkspaceElement extends UmbLitElement {
 	@state()
 	_routes: UmbRoute[] = [
 		{
-			path: 'create/:parentId',
+			path: 'create/:parentKey',
 			component: () => this.#element,
 			setup: (component: PageComponent, info: IRoutingInfo) => {
-				const parentId = info.match.params.parentId === 'null' ? null : info.match.params.parentId;
-				this.#templateWorkspaceContext.create(parentId);
+				const parentKey = info.match.params.parentKey;
+				this.#templateWorkspaceContext.create(parentKey);
 			},
 		},
 		{