... to normalize init arguments for UniqueRepresentation.

sage: FiniteRankFreeModule(QQ, 3) is FiniteRankFreeModule(QQ, 3)
True
sage: FiniteRankFreeModule(QQ, 3) is FiniteRankFreeModule(QQ, 3, name=None)
False

CC: @egourgoulhon @tscrim @mjungmath

Component: linear algebra

Author: Matthias Koeppe

Branch/Commit: 98c8df1

Reviewer: Travis Scrimshaw

Issue created by migration from https://trac.sagemath.org/ticket/30169