fix(editor): Fix broken element-plus loading spinner (no-changelog) (#7817)

<img width="976" alt="image"
src="https://github.com/n8n-io/n8n/assets/6179477/aea8a4c8-277e-4527-b6e9-a5c3427097b6">
<img width="117" alt="image"
src="https://github.com/n8n-io/n8n/assets/6179477/14c8876c-5e26-4154-9fdf-8b1fe9e5f806">

packages/editor-ui/src/mixins/genericHelpers.ts

@@ -66,11 +66,9 @@ export const genericHelpers = defineComponent({
 				return;
 			}
 
-			// @ts-ignore
 			this.loadingService = this.$loading({
 				lock: true,
 				text: text || this.$locale.baseText('genericHelpers.loading'),
-				spinner: 'el-icon-loading',
 				background: 'var(--color-dialog-overlay-background)',
 			});
 		},