Suppress pyright errors about QtCore members

stubs/matplotlib/backends/backend_qt.pyi

@@ -47,8 +47,8 @@ class FigureCanvasQT(QtWidgets.QWidget, FigureCanvasBase):
     def keyPressEvent(self, event) -> None: ...
     def keyReleaseEvent(self, event) -> None: ...
     def resizeEvent(self, event) -> None: ...
-    def sizeHint(self) -> QtCore.QSize: ...
-    def minumumSizeHint(self) -> QtCore.QSize: ...
+    def sizeHint(self) -> QtCore.QSize: ...  # type: ignore
+    def minumumSizeHint(self) -> QtCore.QSize: ...  # type: ignore
     def flush_events(self) -> None: ...
     def start_event_loop(self, timeout=...) -> None: ...
     def stop_event_loop(self, event=...) -> None: ...
@@ -58,7 +58,7 @@ class FigureCanvasQT(QtWidgets.QWidget, FigureCanvasBase):
     def drawRectangle(self, rect) -> None: ...
 
 class MainWindow(QtWidgets.QMainWindow):
-    closing: QtCore.Signal = ...
+    closing: QtCore.Signal = ...  # type: ignore
     def closeEvent(self, event) -> None: ...
 
 class FigureManagerQT(FigureManagerBase):
@@ -71,7 +71,7 @@ class FigureManagerQT(FigureManagerBase):
     def set_window_title(self, title) -> None: ...
 
 class NavigationToolbar2QT(NavigationToolbar2, QtWidgets.QToolBar):
-    message: QtCore.Signal = ...
+    message: QtCore.Signal = ...  # type: ignore
     toolitems: list = ...
     def __init__(self, canvas, parent=..., coordinates=...) -> None: ...
     def edit_parameters(self) -> None: ...