Single post in Disable Right-click Context Menu for Field Pokemon

By 'context menu', I am referring to the list of options that appears when right-clicking an image. I have recently discovered that when you have a berry selected, you can right click to feed a Pokemon as well as left click. The issue is that this brings up the context menu, which I can't remove with custom CSS as it's a JS thing (or at least that's what Google seemed to confirm). By removing the context menu in fields, you would be able to click 50% faster than using the left-click and a number. That's good. However, you wouldn't be able to grab sprites as easily directly from your fields; it would just take 'Inspect Element' instead. But anyways, I think this would be very useful, and of course follows click rules where 1 click = 1 interaction.