Report every failed fetch instead of discarding it

Twenty-four fetch chains ended in an empty catch, which is not error handling
but error deletion: the request fails, nothing renders, nothing is logged, and
the surface sits on Loading forever. That is how the mesh chat's ReferenceError
read as a slow load for as long as it did.

Plugin/unraid/pages/scheduler.php

@@ -1567,7 +1567,7 @@ function vvPollStatus() {
       }
       vvRunningSet = nowRunning;
     })
-    .catch(() => {});
+    .catch(e => vvFetchErr('job status', e));
 }
 
 function vvStartStatusPoll() {
@@ -2785,7 +2785,7 @@ function vvBoardPoll() {
       vvUpdateErrors(d.errors ?? []);
       vvUpdatePartner(d.partner);
     })
-    .catch(() => {});
+    .catch(e => vvFetchErr('script board', e));
 }
 
 function vvUpdateLocks(locks) {