Add an option to disable automatic text selection when right clicking on macOS

Version: 1.0.204 Platform: macOS x64 14.1.1 Plugins: none Frontend: xterm-webgl

I'm running tabby 1.0.204 on MacBook Pro (MacOS 14.1.1) and the 'Right click' in 'Mouse' settings is set to 'Paste'. When I mark a text string and right-click mouse button without moving mouse pointer, the text will be pasted at the cursor position as expected. If I moved the mouse pointer to another text string, then right-click will actually copy the text where mouse pointer points to and paste it at the cursor position instead of the text marked previously.

This behavior doesn't happen on Windows 10/11 (same Tabby version) and I think it is not correct since 'Right click' of 'Mouse' is set to 'Paste', not anything else. By the way, this also happens in previous Tabby versions for MacOS.

Thanks.