Edit column dialog breaks when the column is close to the left edge of the dockable widget

Issue found:

• When the Edit column dialog is close to the left edge of the dockable widget, form elements don't stay within the boundaries of the dockable widget

• Snapshot: 17
• OS: Mac OS/ M1

How to reproduce

1. Open Model editor
2. Dock the editor so that it is vertical, and the left edge of the model table is close to the left edge of the dockable widget. 
3. Edit the leftmost column
4. You should see the form elements sticking out of the Edit column widget panel. See the picture below
   

Expected behavior

Form elements stay within the container, and the container should have the flexibility to house them properly