[multistage] Handle Integer.MIN_VALUE in hashCode based FieldSelectio…

…nKeySelector (#10596)

pinot-query-planner/src/main/java/org/apache/pinot/query/planner/partitioning/FieldSelectionKeySelector.java

@@ -89,7 +89,7 @@ public int computeHash(Object[] input) {
     }
 
     // return a positive number because this is used directly to modulo-index
-    return Math.abs(hashCode);
+    return hashCode & Integer.MAX_VALUE;
   }
 
   @Override