Continuous, raf-aligned events, like pointermove or scroll events, are not measure by Event Timing and are not measured by INP.
The event you show in the screenshots above does show that the event type is "Pointerdown" which is the first event from a mouse click / touch tap. On touch devices we are not initially sure if a pointerdown will turn into a scroll or a tap, and so we start by measuring it, buffer the data, and then figure it out later and either measure or discard.
It is of course possible that for some reason, this scroll is being measured as a discrete event. For example, if you are driving the scroll yourself rather than letting the compositor drive scroll behaviour, then it will count as a pointer interaction. Or maybe we got measurements wrong here for some reason. But looking at the screenshot of your trace, it seems also possible that it was just an accidental spurious click?
Could you share a trace which reproduces the issue? I'd like to look at some of the events in more detail.