Sideload beatmapsets in bundle instead of embedding in discussions

[notbakaneko]

Bringing the modding profile and discussion history pages more in line with the actual discussions page (no embedded beatmapset, explicit prop).

This PR is mainly to check for breakage against the existing components while I convert Discussion to typescript as that doesn't seem to make any reference to discussion.beatmapset but some parts look like they would benefit from having beatmapset being BeatmapsetExtendedJson instead of just BeatmapsetJson 👀