Doesn't seem like the sort of thing that would have a pre-defined label. If they weren't aware of that as their motive, I'd say perhaps 'conflicted'. We all know there's often that duality in D/s play where sometimes the very thing that gets the submissive hot is also something they're afraid of and want to push back on; that doesn't have to be a constant state of being, it can be a see-saw of emotions where at times they're into it and at other times they're resisting.
But if it's not an internal conflict for them, but a deliberate thing where they're only interested in being submissive up to a certain point, well, then their other motives come into play. If it's just about protecting / asserting their own limits, then it's a positive, healthy thing! If it's motivated by getting one over on the dominant, like they want to get a moment where it's revealed that the dominant wasn't really in charge at all, then it's a bit more of a spiteful, childish tinge to the character. If they get off on resisting, then that's 'brattishness', which can be either positive (dominant likes that they're a brat) or negative (dominant doesn't like the resistance, but submissive doesn't care).
I think that if it's the spiteful motive, and that is hidden from the dominant, it suggests it's likely to play out as a point of conflict. So either the dominant gets frustrated and rejects them (and the story becomes something more melodramatic), or they trump the submissive and thwart their attempt to assert control part-way through. That could play out as 'reluctant' (submissive re-evaluates their limits and goes with it) or non-consensual (this is no longer enjoyable for the submissive but they don't get a choice).
If it's the former (i.e. they're just defending their limits), and the dominant chooses to ignore that, then it plays out as a different sort of conflict where the relationship degenerates from consensual to not.
Other than brattishness, none of this really have labels that I know of, because it's not really within the bounds of normal "play", it is just characters and their motivations in life and personal interactions. Like, I don't think you would/should put a different play label on someone who is masochistic because it's their way of dealing with some trauma in their past; as if "trauma sub" was a normal and valid sort of play.