Localized keyboard (Czech) is missing mapping for <Ctrl-ú> (ESC control code) on macOS

[risa2000]

This is rather a question than a bug report, but I have no idea where to start.

I have recently added vscode-neovim to VSCode on my Windows 10 machine and was rather satisfied with the results, which inspired me to try it in VSCode on macOS (Sonoma on Apple silicon).
The important fact is that in both systems I am using Czech localized keyboard layout (on both systems the one called "Czech"). While on Windows the localized keyboard works fine, on macOS as soon as I switch to the CZ layout I cannot emit ESC control code (to quit insert mode, etc.) by using the <C-ú> combo.

Looking at the keyboard mapping in VSCode while using CZ layout shows that while in Windows the <C-[> is correctly remapped the <C-ú>, (character ú in CZ layout is written by the same key as [ in US layout), on macOS, the mapping simply vanishes and reappears when switching back to US layout.

Both machines run the same VSCode version 1.87.2
Few screenshot to illustrate what I mean by "mapping simply vanishes".

Windows using US layout, with correct mapping:

Windows using CZ layout, with correct mapping:

macOS using US layout and having correct mapping:

macOS using CZ layout and missing the <C-ú> mapping:

What I found interesting is that the displayed mapping in VSCode changes on the fly when switching the keyboard layouts. So it looks like VSCode knows how to process the "input source" change in both systems. Since it also puts back the correct one in the US version, it looks like the definitions are correct, but for some reason the localized one on macOS does not make it to the actual interpretation (of the mappings) and does not work as well.