TYP: fix typechecking (ignore QtCore not being discoverable at compile time)

Author: neutrinoceros

viscm/bezierbuilder/__init__.py

@@ -26,7 +26,7 @@
 """
 
 import numpy as np
-from matplotlib.backends.qt_compat import QtCore
+from matplotlib.backends.qt_compat import QtCore  # type: ignore [attr-defined]
 from matplotlib.lines import Line2D
 
 from viscm.bezierbuilder.curve import curve_method

viscm/gui.py

@@ -26,7 +26,11 @@
 # matplotlib.rcParams['backend'] = "QtAgg"
 # Do this first before any other matplotlib imports, to force matplotlib to
 # use a Qt backend
-from matplotlib.backends.qt_compat import QtCore, QtGui, QtWidgets
+from matplotlib.backends.qt_compat import (  # type: ignore [attr-defined]
+    QtCore,
+    QtGui,
+    QtWidgets,
+)
 from matplotlib.colors import ListedColormap
 from matplotlib.gridspec import GridSpec