Calling search results without parameters (#2056)

Calling search results without parameters leads to "Cannot read properties of undefined (reading 'length')" error. It does not matter which search mask is called.

gradle/changelog/empty_search.yaml

@@ -0,0 +1,2 @@
+- type: fixed
+  description: Calling search results without parameters ([#2056](https://github.com/scm-manager/scm-manager/pull/2056))

scm-ui/ui-api/src/search.ts

@@ -113,7 +113,7 @@ export const useSearch = (query: string, optionParam = defaultSearchOptions): Ap
     ["search", options.type, queryParams],
     () => apiClient.get(`${link}?${createQueryString(queryParams)}`).then((response) => response.json()),
     {
-      enabled: query.length > 1,
+      enabled: query?.length > 1,
     }
   );
 };