The wx/_interaction_helpers.py does not respond to "Right" or "Left" interaction

[pbrod]

The key_click_text_entry function for Wx located in traitsui/testing/tester/_ui_tester_registry/wx/_interaction_helpers.py
does not accept the interaction.key "Right", "Left" as arguments which makes testing code like this

number_field.perform(KeyClick("Right")) 

crash when using Wx.

[aaronayres35]

for some history:
https://github.com/enthought/traitsui/pull/1162/files
https://github.com/enthought/traitsui/pull/1181/files
#1184