UI dialog scaling issue Merged

The Issue: When using Spotfire on a machine with Windows display scaling set to 150% (a common setting for 1920x1080 monitors), the "OK" button in the "Add Columns" dialog is rendered off-screen.

The dialog window cannot be resized, moved, or scrolled to access the button. This prevents the user from completing the data joining operation, blocking a core workflow.

Steps to Reproduce:

1. Set the Windows display scaling to 150%.

2. In Spotfire Analyst, attempt to join two files using the "Add Columns" feature.

3. On the final confirmation screen of the dialog, the "OK" button is not visible.

Workaround: The issue is resolved by changing the display scaling to 125%. However, for some users, this makes the text and UI elements too small for comfortable use.

Suggested Improvement: We request that the dialog windows in Spotfire Analyst be updated to correctly support high-DPI display settings. All UI elements, especially action buttons ("OK", "Cancel", etc.), should remain visible and accessible on-screen regardless of the user's scaling settings.