Recurrence 2 lookup certificate: A5 source bound

This is a checked coefficient-lookup shard for the second pseudo-division recurrence in the order-seven certificate.

theorem MazurTorsion.Kubert.OrderSevenBacktrackingCertificate.Internal.ResultantCertificate.recurrence2A5_coeff_high (n : ℕ) (h : 98 < n) : Polynomial.coeff remainder2Coefficient5 n = 0

theorem MazurTorsion.Kubert.OrderSevenBacktrackingCertificate.Internal.ResultantCertificate.recurrence2A5_natDegree_le : Polynomial.natDegree remainder2Coefficient5 ≤ 98