Ensure storing the actual cursor column

Author: tanloong

Lib/_pyrepl/windows_console.py

@@ -287,7 +287,7 @@ def __write_changed_line(
             # here. Windows keeps the cursor at the end of the line. It only
             # wraps when the next character is written.
             # https://github.com/microsoft/terminal/issues/349
-            self.posxy = wlen(newline) - 1, y
+            self.posxy = self.screen_xy[0], y
         else:
             self.posxy = wlen(newline), y