Issues with keymaps on macOS

[TylerLeonhardt]

Steps to reproduce:

1. Insert mode
2. type “backtick” (`) char, equals = char, tilda ~ char or plus + char

Expected:

backtick, equals, tilda, or plus is written

Actual:

“none” is written for backtick and equals
nothing is written for tilda and plus

NOTE:

on my keyboard layout (standard en-US), tilda is accessed via SHIFT+` and plus is accessed via SHIFT++

[yatli]

This is an upstream issue, see: https://github.com/AvaloniaUI/Avalonia/blob/master/native/Avalonia.Native/src/OSX/KeyTransform.mm#L29

Some of the keycodes are commented out.

[yatli]

CC @kekekeks @jkoritzinsky

[yatli]

upstream PR merged.