tk: Resize the canvas, not the figure.

Resizing the figure directly does not account for the toolbar, so
figures are actually a little shorter than they should be. The recent
change to `Text.get_window_extent` some how causes this to actually get
reflected in the Matplotlib figure size, which cycles back to Tk and
shrinks the window. However, this can be triggered by other calls to
`Figure.set_size_inches` as noted in the fixed issues.

Fixes matplotlib#10083.
Fixes matplotlib#10566.
Fixes matplotlib#16926.

Author: QuLogic

lib/matplotlib/backends/_backend_tk.py

@@ -446,7 +446,7 @@ def _get_toolmanager(self):
         return toolmanager
 
     def resize(self, width, height):
-        self.canvas._tkcanvas.master.geometry("%dx%d" % (width, height))
+        self.canvas._tkcanvas.configure(width=width, height=height)
 
         if self.toolbar is not None:
             self.toolbar.configure(width=width)