Dialog sizing for dataviews

The sizing of a dialog doesn't fit the sizing of a histogram or chart dataview when applying `target:"dialog"` to the json configuration of the dataview.

<img width="857" height="647" alt="Image" src="https://github.com/user-attachments/assets/4029d3cd-7c2c-45b4-8e89-2cdc743f0e5f" />