fix(contracts): allow fulfiller to be the offerer in case of the auction

[ptisserand]

Description

• For auction order, fulfiller and offerer could be the same.
• Renamed some tests
• For auction order, fulfill allowance is check for related order offerer.

What type of PR is this? (check all applicable)

• [ ] 🍕 Feature (feat:)
• [x] 🐛 Bug Fix (fix:)
• [ ] 📝 Documentation Update (docs:)
• [ ] 🎨 Style (style:)
• [ ] 🧑‍💻 Code Refactor (refactor:)
• [ ] 🔥 Performance Improvements (perf:)
• [ ] ✅ Test (test:)
• [ ] 🤖 Build (build:)
• [ ] 🔁 CI (ci:)
• [ ] 📦 Chore (chore:)
• [ ] ⏩ Revert (revert:)
• [ ] 🚀 Breaking Changes (BREAKING CHANGE:)

Related Tickets & Documents

Added tests?

• [x] 👍 yes
• [ ] 🙅 no, because they aren't needed
• [ ] 🙋 no, because I need help

Added to documentation?

• [ ] 📜 README.md
• [ ] 📓 Documentation
• [x] 🙅 no documentation needed

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Closing Issues

[linear[bot]]

DEV-522 allow fulfiller to be the offerer in case of the auction

[changeset-bot[bot]]

⚠️ No Changeset found

Latest commit: 158e4476712640e710a1fde8f5b39bdbb3605b46

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