Template Helpers: Resize Dialog on Title Click

[melvanderwal]

When creating a Template Sensor Helper or Template Binary Sensor Helper, the editor's Jinja content wraps, as shown in this binary sensor helper screen capture.

Many dialogs (including this one, used to launch the template editor dialog shown above) will widen to nearly the screen width when the title of the dialog is clicked.

It would be useful if the template helper editor dialogs also widened on title click. This would facilitate easier authoring or editing of a template sensor helper's Jinja code.