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/partnership.php

@@ -1274,7 +1274,7 @@ function vvPtLoad() {
   fetch('/plugins/varaverk/api/partnership.php')
     .then(r => r.json())
     .then(_render)
-    .catch(() => {});
+    .catch(e => vvFetchErr('partnership status', e));
 }
 
 _vvPtReload = vvPtLoad; // expose to top-level toggle fns