Test262 TODO: Date.UTC + Date @@toPrimitive

[rogeralsing]

Summary

• implement spec-compliant Date.UTC with ordered coercions and extended year handling
• make Date.prototype[Symbol.toPrimitive] generic and non-writable
• update TODO notes

Tests

• dotnet test tests/Asynkron.JsEngine.Tests.Test262 -c Release --settings tests/Asynkron.JsEngine.Tests.Test262/BuiltInsTests.runsettings --filter "Name=Date_UTC"
• dotnet test tests/Asynkron.JsEngine.Tests.Test262 -c Release --settings tests/Asynkron.JsEngine.Tests.Test262/BuiltInsTests.runsettings --filter "Name=Date_prototype_Symbol_toPrimitive"

[rogeralsing]

Fixed in 3558d11.\n\nTests:\n- dotnet test tests/Asynkron.JsEngine.Tests.Test262 -c Release --settings tests/Asynkron.JsEngine.Tests.Test262/BuiltInsTests.runsettings --filter "Name=Date_UTC"\n- dotnet test tests/Asynkron.JsEngine.Tests.Test262 -c Release --settings tests/Asynkron.JsEngine.Tests.Test262/BuiltInsTests.runsettings --filter "Name=Date_prototype_Symbol_toPrimitive"