text: Title: [Feat] How to display a bar chart instead of a heatmap?
  Body: Noticed an issue from [https://discord.com/channels/987366424634884096/1057481447541325885]()
  
  > I'm trying out pygwalker and I've noticed that some of my fields land in the 'blue' portion of the field list, which appear to be treated as buckets, while some land in the 'green' portion of the field list, which look like they're treated as numbers. In the dataframe I'm loading, one of my fields is in the blue bucket category and the other is in the green number category. Both fields are int64 data types with no nulls. 
  > 
  > How should I understand this behavior and how can I modify it?
  > 
  > UPD: It does look like I can drag the field from blue to green, but even if I choose 'Sum' it is still treated as a bucket, so what should look like a bar chart instead resembles a heatmap.