I think a lot of this ALSO depends on the TYPE of scene something is or isn’t, too.
If it’s a one on one social scene, and I’m not at least neutral to someone OOC’ly - Negotiated, good natured IC conflict is fine - I’m almost always never going to pursue that scene or will politely turn that down.
My time and energy are precious, and they are non-renewable resources. Why would I waste them in something I do for fun and for free with people who don’t spark joy? Marie Kondo that ish and throw it out.
However, if it’s a small to medium scene about something plot-related rather than slice of lifing, as long as I don’t actively DISLIKE someone OOC’ly, I’m fine with interacting with and including just about anyone relevant. A lot of times, that’s HOW the neutral parties become friends to start out with. Plots, events, all of that should be open invitations and OOC’ly welcoming to anyone participating in good faith.
Lastly, if it’s a large scene, an event, or something strongly plot relevant? Even if I don’t like a person at all OOC’ly, as long as it’s not so awful they’re on a block list or avoid at all costs level of dislike… I’ll still include them. I’ll interact with and involve them. I don’t have to like someone to make them feel welcome in a big game plot. Meta-plot is bigger than any individual characters, and everyone interacting in OOC good faith should have the same chances to participate.
All of these are grey areas. All of these have to be individually defined based on personal tolerance levels, time, energy, and attention. For me, personally though? As long as someone isn’t totally toxic… I would always rather be somewhere fostering an atmosphere of warmth and inclusion.