That is a totally fair point, Peter. I actually think someone else made this same point.

In a way, adding Leia’s reciprocating kiss would be the writer’s/director’s way of validating Han’s behavior through Leia, making it seem okay. He acts predatory, and Leia says no, but then Han kisses her, and she rewards him by then kissing him back and wrapping her arms around him.

At least in the way it is edited theatrically, the very least Leia does is sort of go along with the kiss after Han initiates it. But after 3PO interrupts them, she leaves without saying anything else to Han.

It is still not great. It’s sort of a lose/lose either way you go, with what we have to work with. So in a way, it’s better to leave it as-is, and don’t have Leia verbally condone his behavior.