fix(stream): continue on iterator error values

if the iterator errors when attempting to get the next value, we can assume subsequent calls to next will also error, and abort, but if we successfully get the next value, but it ends up triggering an error, we can continue, optimistic that the next value will not do so.

Author: yaacovCR

src/execution/execute.js

@@ -1063,8 +1063,6 @@ function completeAsyncIteratorValue(
               pathToArray(fieldPath),
             );
             handleFieldError(error, itemType, errors);
-            resolve(completedResults);
-            return;
           }
 
           const newIndex = index + 1;