Fix vertical_breakpoints won't work

Author: python-and-novella

src/textual/screen.py

@@ -1375,7 +1375,7 @@ async def _on_resize(self, event: events.Resize) -> None:
         if horizontal_breakpoints:
             self._set_breakpoints(width, horizontal_breakpoints)
         if vertical_breakpoints:
-            self._set_breakpoints(height, horizontal_breakpoints)
+            self._set_breakpoints(height, vertical_breakpoints)
 
     def _set_breakpoints(
         self, dimension: int, breakpoints: list[tuple[int, str]]