fix: fetchSearchResultsWithoutNumber trigger

fetchSearchResultsWithoutNumber previously relied on previousSearch
value to perform the second search. However, previousSearch can take
many forms depending on the search that was done, for example it might
just be a number when searching for a specific service_id. This would
cause the second search to happen possibly search?q={service_id} instead
of unit?service_id={service_id}.

refs: PL-32

src/views/SearchView/SearchView.js

@@ -335,7 +335,8 @@ function SearchView() {
       }
     } else {
       const { previousSearch, isFetching } = searchFetchState;
-      if (previousSearch && !isFetching) {
+      const options = getSearchParamData();
+      if (options.q && previousSearch && !isFetching) {
         // If no results found, try to fetch results without number
         fetchSearchResultsWithoutNumber(previousSearch);
       }