patch 8.1.0041: attribute "width" missing from python window attribute list

Problem:    Attribute "width" missing from python window attribute list.
Solution:   Add the item. (Ken Takata) Order the list like the items are used
            in the WindowAttr() function.
diff --git a/src/testdir/test87.ok b/src/testdir/test87.ok
index 72b59b6..9ca4b62 100644
--- a/src/testdir/test87.ok
+++ b/src/testdir/test87.ok
@@ -443,7 +443,7 @@
 vim.current.tabpage:TabPage:True
 current:__dir__,buffer,line,range,tabpage,window
 buffer:__dir__,append,mark,name,number,options,range,valid,vars
-window:__dir__,buffer,col,cursor,height,number,options,row,tabpage,valid,vars
+window:__dir__,buffer,col,cursor,height,number,options,row,tabpage,valid,vars,width
 tabpage:__dir__,number,valid,vars,window,windows
 range:__dir__,append,end,start
 dictionary:__dir__,get,has_key,items,keys,locked,pop,popitem,scope,update,values