fix: empty hosts array in filterHostsByLeadThreshold (#19343)

* return early if hosts is empty

* feedback

Co-authored-by: Alex van Andel <me@alexvanandel.com>

---------

Co-authored-by: CarinaWolli <wollencarina@gmail.com>
Co-authored-by: Alex van Andel <me@alexvanandel.com>

packages/lib/bookings/filterHostsByLeadThreshold.ts

@@ -103,7 +103,7 @@ export const filterHostsByLeadThreshold = async <T extends BaseHost<BaseUser>>({
   if (maxLeadThreshold === 0) {
     throw new Error(errorCodes.MAX_LEAD_THRESHOLD_FALSY);
   }
-  if (maxLeadThreshold === null) {
+  if (maxLeadThreshold === null || hosts.length < 1) {
     return hosts; // don't apply filter.
   }