fix: honor thumbs-down from any user when skipping duplicate auto-close

[Codeturion]

Summary

The dedupe bot comment promises "To prevent auto-closure, add a comment or 👎 this comment" with no author qualifier (scripts/comment-on-duplicates.sh:89), but auto-close-duplicates.ts only counts a -1 reaction from the issue author, so anyone else's thumbs-down is ignored and the issue still auto-closes. The comment path already blocks on activity from any user, so this PR makes the reaction path consistent: any user's -1 on the dupe comment skips auto-closure. No new abuse surface, since anyone can already block closure by commenting.

Files changed

• scripts/auto-close-duplicates.ts (reaction predicate and its debug logs, lines 228-241)

Verification

Setup: repro script that slices the actual .some(...) predicate out of a given copy of the file and evaluates it against fixture reaction sets (author -1, non-author -1, non-author +1, none). Typecheck with tsc 7.0.2 (--strict, es2022+dom libs) on both versions.

Details: ran the predicate harness and typecheck against upstream main and this branch on macOS/node. Both versions typecheck clean; behavior differs only in the non-author -1 case.

Comparisons

Reactions on dupe comment	Unfixed	Fixed
author 👎	blocks auto-close	blocks auto-close
non-author 👎	auto-closes anyway (bug)	blocks auto-close
non-author 👍 only	proceeds	proceeds
none	proceeds	proceeds

If author-only was intentional, the alternative is rewording the bot comment; happy to switch to that if preferred.

Refs

Fixes #79146