I've been looking at test262 features-to-edition mapping and noticed a couple of discrepancies:

• arraybuffer-transfer is part of ES2024 (ES15):
  https://262.ecma-international.org/15.0/#sec-arraybuffer.prototype.transfer
  https://github.com/boa-dev/boa/blob/main/tests/tester/src/edition.rs#L126

• set-methods is part of ES2025 (ES16):
  https://262.ecma-international.org/16.0/index.html#sec-set.prototype.union
  https://github.com/boa-dev/boa/blob/main/tests/tester/src/edition.rs#L280