Fix: Corner Pin node gizmo is too small

The Corner Pin node gizmo is too small to be used, so increase its size
to match the size of other node gizmos to improve usability.

source/blender/editors/space_node/node_gizmo.cc

@@ -541,7 +541,7 @@ static void WIDGETGROUP_node_corner_pin_setup(const bContext * /*C*/, wmGizmoGro
 
     RNA_enum_set(gz->ptr, "draw_style", ED_GIZMO_MOVE_STYLE_CROSS_2D);
 
-    gz->scale_basis = 0.01f / 75.0;
+    gz->scale_basis = 0.05f / 75.0;
   }
 
   gzgroup->customdata = cpin_group;