Settings form breaks with Leaflet 10.2.14

Confirmed the MR works with both 10.2.13 (before change) and 10.2.14 (after change)

I'm not sure how far back that fix will work for, the create() method we're adding to the extended object, from the original, has been in its current form for 4 years, other than the change from "static" to "self"

Should actually work for much older versions then.

I'm inclined to merge this MR

The MR was merged

Automatically closed - issue fixed for 2 weeks with no activity.