HelpDialog needs Minimize and Close Buttons

[simon-leech]

Description

The helpDialog that is shown by default when editing geometries covers geometry editing popup on the map.
We cannot force the map popup above the dialog as it is rendered on the canvas.

Instead the solution is to ensure the minimize and close buttons are available on the helpDialog, which will allow the user the ability to hide them when editing.

Type of Issue

Please delete options that are not relevant, and select all options that apply.

• ✅ Bug