set doubleSided rendering default to false

src/mol-geo/geometry/geometry.ts

@@ -99,7 +99,7 @@ export namespace Geometry {
             opaque: props.alpha === 1
         }
     }
-    
+
     export function updateRenderableState(state: RenderableState, props: PD.Values<Params>) {
         state.opaque = props.alpha === 1
     }

src/mol-geo/geometry/mesh/mesh.ts

@@ -343,7 +343,7 @@ export namespace Mesh {
 
     export const Params = {
         ...Geometry.Params,
-        doubleSided: PD.Boolean(true),
+        doubleSided: PD.Boolean(false),
         flipSided: PD.Boolean(false),
         flatShaded: PD.Boolean(false),
     }