[NETSHELL] Register folder attributes as SFGAO_FOLDER, not SFGAO_CANDELETE (#5880)

On Windows the Network connections folder uses a binary value
and someone forgot about Little Endian when converting it to a DWORD.

Addendum to 7eb3fcf1d (r66485). CORE-9276

This issue has not been very visible because of bugs in CRegFolderEnum.

dll/shellext/netshell/res/netshell.rgs

···
             DefaultIcon = s '%MODULE%'
             ShellFolder
             {
-                val Attributes = d '0x00000020'
+                val Attributes = d '0x20000000'
             }
             val LocalizedString = s '@%MODULE%,-10000'
         }