* fix(discord): role-based allowlist never matches because Carbon Role objects stringify to mentions
Carbon's GuildMember.roles getter returns Role[] objects, not raw ID strings.
String(Role) produces '<@&123456>' which never matches the plain role IDs
in the guild allowlist config.
Use data.rawMember.roles (raw Discord API string array) instead of
data.member.roles (Carbon Role[] objects) for role ID extraction.
Fixes#16207
* Docs: add discord role allowlist changelog entry
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Co-authored-by: Shadow <hi@shadowing.dev>
c682634188