wxGUI/vdigit: fix keyboard shortcut for activating point/line tool

[tmszi]

Describe the bug
Vector Digitizer keyboard shortcut for activating point/line tool doesn't work.

To Reproduce
Steps to reproduce the behavior:

1. Launch Vector Digitizer g.gui.vdigit -c map=vdigit
2. Press keyboard shortcut Ctrl + P or Ctrl + L
3. See error

Traceback (most recent call last):
  File
"/usr/lib64/grass83/gui/wxpython/vdigit/mapwindow.py", line
142, in OnKeyDown

event = wx.CommandEvent(winid=self.toolbar.addPoint)
TypeError
:
CommandEvent(): arguments did not match any overloaded call:
  overload 1: 'winid' is not a valid keyword argument
  overload 2: 'winid' is not a valid keyword argument

Expected behavior
Vector Digitizer keyboard shortcut for activating point/line tool should be work without error message.

System description:

• Operating System: all
• GRASS GIS version: all