You don't specify what "sealant" and final finish you were using but there's a dirty secret in the finishing world, in general "sealant" products are nothing more than dilute forms of wood finish.
This isn't universal but presumably the two products you have there are similar enough that you couldn't immediately spot that you'd opened the wrong tin, which suggests that they are from the same 'family' so to speak. So you could unknowingly have been applying the very same thing as your final finish, just in more dilute form, sold in a different package.
If you managed to clean it off without making a mess of the surface and the area dries properly there's a good chance you can continue to apply your second coat of finish.
If you're concerned there might be an issue do a small test in an inconspicuous spot and see how it dries, whether it dries too slowly or incompletely, remaining sticky for an extended period, which would suggest an incompatibility.