Fix resizing circle when using L.CRS.Simple

[Socolin]

When resizing circle on a map with the option: crs: L.CRS.Simple the circle radius is invalid

• Repro link: https://codepen.io/socolin/pen/qBBrzMO
• Fixed version: https://codepen.io/socolin/pen/xxxqoyb

The problem seems to be from this line:
https://github.com/Leaflet/Leaflet.Editable/blob/master/src/Leaflet.Editable.js#L1712
When it compute the new radius size, it ignore the map crs option and use Earth.distance(this, toLatLng(other));

https://github.com/Leaflet/Leaflet/blob/37d2fd15ad6518c254fae3e033177e96c48b5012/src/geo/LatLng.js#L75

[faizalami]

I need this

[yohanboniface]

👍 and sorry for that long delay!