ntdll/tests: Use msinfo32.exe instead of notepad.exe.

Under Windows 11, notepad.exe has been migrated into the UWP framework,
and can no longer be launched as a 32bit process:
- even if c:\windows\syswow64\notepad.exe is still a 32 bit PE file
- the process created from c:\windows\syswow64\notepad.exe is not a
  wow64 process.

So use msinfo32.exe instead. Like notepad.exe, it's a gui application,
present on Wine and all test-bot:ed windows platforms. But unlike
notepad.exe, it's not an UWP app on Windows 11.

Signed-off-by: Eric Pouech <eric.pouech@gmail.com>

dlls/ntdll/tests/exception.c

@@ -8068,7 +8068,7 @@ static void test_debug_registers(void)
 
 static void test_debug_registers_wow64(void)
 {
-    char cmdline[] = "C:\\windows\\syswow64\\notepad.exe";
+    char cmdline[] = "C:\\windows\\syswow64\\msinfo32.exe";
     PROCESS_INFORMATION pi;
     STARTUPINFOA si = {0};
     WOW64_CONTEXT wow64_ctx;