macOS: certain commands executed twice when focus is in webview

[bpasero]

Extracted from #56988 (comment)

When invoking a keybinding that also exists on the macOS native menu, while having focus inside a webview, the command is both triggered through the menu and our keybinding forwarder (here).

It looks like we could possibly use webContents.setIgnoreMenuShortcuts(true) to workaround this, but then any menu that is implemented with a :role will not work (e.g. cut, copy, paste).

[mjbvz]

I wonder if we can use the before-input-event here to avoid having the listener in the webview

[bpasero]

@mjbvz that was my previous solution but it lead to @Tyriar bug that keybindings are not working on Windows. The problem is that the before-input-event does not carry all the keybinding information around that is needed for us to replicate the event on the main side.

Nevertheless, even before when I used before-input-event we were suffering from this bug.

[mjbvz]

@sbatten Suggested that #64228 may also be of interest

[bpasero]

@mjbvz with your change, any command that is implemented with a :role does not work anymore inside the webview. For example, try to Cmd+C or undo/redo in an input field, it will not work because these commands only worked through the menu.

[bpasero]

Actually since this issue is addressed, let's move that new issue to #65452