Do not take into account negative allocations for reporting

FORCE_FREE_TAG tag will have negative memory reservations
and thus will cause succinctBytes to fail.

presto-main/src/main/java/io/prestosql/memory/QueryContext.java

@@ -347,6 +347,7 @@ private String getAdditionalFailureInfo(long allocated, long delta)
         String topConsumers = queryAllocations.entrySet().stream()
                 .sorted(comparingByValue(Comparator.reverseOrder()))
                 .limit(3)
+                .filter(e -> e.getValue() >= 0)
                 .collect(toImmutableMap(Entry::getKey, e -> succinctBytes(e.getValue())))
                 .toString();