feat(editor): Open template credential setup from collection (#7882)

Open the template credential setup when using a template from the
collection view.

NOTE! This feature is still behind a feature flag. To test, set:

```js
localStorage.setItem('template-credentials-setup', 'true')
```


https://github.com/n8n-io/n8n/assets/10324676/46ccec7c-5a44-429e-99ad-1c10640e99e5

packages/editor-ui/src/stores/templates.store.ts

@@ -220,9 +220,7 @@ export const useTemplatesStore = defineStore(STORES.TEMPLATES, {
 				this.currentSessionId = `templates-${Date.now()}`;
 			}
 		},
-		async fetchTemplateById(
-			templateId: string,
-		): Promise<ITemplatesWorkflow | ITemplatesWorkflowFull> {
+		async fetchTemplateById(templateId: string): Promise<ITemplatesWorkflowFull> {
 			const settingsStore = useSettingsStore();
 			const apiEndpoint: string = settingsStore.templatesHost;
 			const versionCli: string = settingsStore.versionCli;