feat: add fail_if_not_exists for PrefixedContext.reply#1608

AstreaTSS merged 2 commits intointeractions-py:unstableinteractions-py/interactions.py:unstablefrom

AstreaTSS:fail_if_not_exists_ctx_replyAstreaTSS/interactions-py-library:fail_if_not_exists_ctx_replyCopy head branch name to clipboard