Add option to not display thumbnail in context menu or submenu

[Demopans]

See title

[raspopov]

Thank you for your interest in the program. May I ask why you need a context menu without a preview? You can also disable the menu entirely, if you'd like.

[Demopans]

I already see previews through window's built in preview panel. It also has a bit of a latency issue when used on files over NAS, which is why I am interested in an option to disable the preview in the context menu, while keeping the preview on the built in preview panel