[usp10] Notepad : Select all only works with word wrap enabled

reactos-bootcd-0.4.16-dev-1091-g24c2e44-x86-gcc-lin-dbg

Duplicated by CORE-20176 which is a good test case for a fix too.

• Copy to clipboard content of "long_url" text
• Open notepad, paste
• If word wrap is enabled, CTRL+A or Select all works
• If word wrap is disabled, CTRL+A or Select all or double click does nothing
• Wine 10.7 own notepad suffers from the same https://bugs.winehq.org/show_bug.cgi?id=58208
• Wine Fix for this : https://gitlab.winehq.org/wine/wine/-/merge_requests/8014 suspects that the faulty code is here : https://github.com/reactos/reactos/blob/master/dll/win32/usp10/usp10.c#L1996