Merge branch 'feature/erase_pen_drawing_on_collaboration_change' into 'develop'

協業切替の時ペン描きを消すように修正

See merge request !145

public_new/js/share.js

@@ -429,6 +429,7 @@ function changeCollaboration(changeCollaborationType) {
 }
 
 function initCollaborationUI(changeCollaborationType){
+  $('#coviewEraserCtrBtn').click();
   if ($('.user_btn').hasClass("hide")) {
     $('.user_btn').click();
   }