Back Office: Fixes link to workspace root from breadcrumb trail (closes: #20455) (#20459)

Fixes link to workspace root from breadcrumb trail.

Author: AndyButland

src/Umbraco.Web.UI.Client/src/packages/core/workspace/components/workspace-breadcrumb/workspace-menu-breadcrumb/workspace-menu-breadcrumb.element.ts

@@ -78,7 +78,13 @@ export class UmbWorkspaceBreadcrumbElement extends UmbLitElement {
 
 	#getHref(structureItem: UmbStructureItemModel) {
 		if (structureItem.isFolder) return undefined;
-		return `section/${this.#sectionContext?.getPathname()}/workspace/${structureItem.entityType}/edit/${structureItem.unique}`;
+
+		let href = `section/${this.#sectionContext?.getPathname()}`;
+		if (structureItem.unique) {
+			href += `/workspace/${structureItem.entityType}/edit/${structureItem.unique}`;
+		}
+
+		return href;
 	}
 
 	override render() {

src/Umbraco.Web.UI.Client/src/packages/core/workspace/components/workspace-breadcrumb/workspace-variant-menu-breadcrumb/workspace-variant-menu-breadcrumb.element.ts

@@ -115,8 +115,13 @@ export class UmbWorkspaceVariantMenuBreadcrumbElement extends UmbLitElement {
 
 	#getHref(structureItem: any) {
 		if (structureItem.isFolder) return undefined;
-		const workspaceBasePath = `section/${this.#sectionContext?.getPathname()}/workspace/${structureItem.entityType}/edit`;
-		return `${workspaceBasePath}/${structureItem.unique}/${this._workspaceActiveVariantId?.toCultureString()}`;
+
+		let href = `section/${this.#sectionContext?.getPathname()}`;
+		if (structureItem.unique) {
+			href += `/workspace/${structureItem.entityType}/edit/${structureItem.unique}/${this._workspaceActiveVariantId?.toCultureString()}`;
+		}
+
+		return href;
 	}
 
 	override render() {