Use capacity for default value computation

As the size is now the nodeCount and not the number of values set.

Author: FlorentinD

core/src/main/java/org/neo4j/gds/core/loading/nodeproperties/LongNodePropertiesBuilder.java

@@ -128,7 +128,7 @@ public NodePropertyValues build(long size, PartialIdMap idMap, long highestOrigi
 
         var propertyValues = propertiesByMappedIdsBuilder.build();
 
-        var maybeMaxValue = size > 0
+        var maybeMaxValue = propertyValues.capacity() > 0
             ? OptionalLong.of((long) MAX_VALUE.getVolatile(LongNodePropertiesBuilder.this))
             : OptionalLong.empty();