wxGUI/psmap: fix vector line map props dialog PenStyleComboBox widget drawing items

[tmszi]

Describe the bug
Vector line map props dialog Choose line style (PenStyleComboBox() class) widget doesn't drawing items correctly.

To Reproduce
Steps to reproduce the behavior:

1. Launch Cartographic Composer g.gui.psmap
2. Add map frame (via activating map frame tool from main toolbar), choose vector line map e.g. streams and hit Ok button (important is choose vector line map)
3. Double left mouse click on the square map frame to opening map frame dialog and switch to Vector maps page (tab)
4. On the Vector maps page (tab) hit Properties button to opening vector line e.g. streams map props dialog
5. On the vector line e.g. streams map props dialog switch to Size and style page (tab)
6. On Size and style page (tab) try to change line style (Choose line style widget)
7. See error

TypeError: DC.DrawText(): arguments did not match any overloaded call:
  overload 1: argument 3 has unexpected type 'float'
  overload 2: argument 2 has unexpected type 'int'

Expected behavior
Vector line map props dialog Choose line style (PenStyleComboBox() class) widget should draw items correctly.

Screenshots

Default behavior:

Expected behavior:

System description:

• Operating System: GNU/Linux
• GRASS GIS version: all

GRASS nc_basic_spm_grass7/PERMANENT:~ > python3 -c "import sys, wx; print(sys.version); print(wx.version())"
3.10.13 (main, Sep 16 2023, 22:24:59) [GCC 12.3.1 20230526]
4.2.0 gtk3 (phoenix) wxWidgets 3.2.2.1

Additional context
Device context DrawTex() and DrawLine() method require input x, y parameter argument type as integer type.

Method doc:

https://docs.wxpython.org/wx.DC.html#wx.DC.DrawText
https://docs.wxpython.org/wx.DC.html#wx.DC.DrawLine