Mismatch with Google Circle behavior when editing radius

[ghost]

When hovering over a radius handle, before dragging:

• mapbox-gl-circle: all handles are highlighted
• google.maps.Circle: only the radius handle under mouse cursor is highlighted

When dragging a handle to adjust radius:

• mapbox-gl-circle 1) all radius handles moves 2) extra circle stroke follows radius handles
• google.maps.Circle: 1) only the handle that user interact with moves 2) extra circle stroke follows radius handle