fix: batch NFT ownership checks via Multicall3 #8281

Bugbot Review

Bugbot Analysis Progress (10m 5s elapsed)

✅ Gathered PR context (3s)
✅ Completed bug detection (9m 53s)
✅ Posted analysis results (9s)

Final Result: Bugbot completed review and found 1 potential issue. 1 previously reported issue remain unresolved.

Request ID: serverGenReqId_26c8be8c-fd99-41f5-aa16-36e23a72d285

Cursor Bugbot has reviewed your changes and found 1 potential issue.

There are 2 total unresolved issues (including 1 from previous review).

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