Hey,
So I never really had a super good solution for this, but I'll share what I wound up doing when I ran into this issue.
As far as I know, there's no component that can differentiate between mouse clicks by default, but the "Get Mouse Button Down" or "Get Mouse Button" actions can.
So my solution was to make a state with "Get Mouse Button Down" (Right Click), and enter that state when needed. If you can only right click while holding left click down, you can add a prior state with "Get Mouse Button" (Left Click) to control when to enter the right click state.
Hopefully that makes sense, and good luck.