imag modifies zero!! #22095
Description
sage: K.<a> = NumberField(x^2 + x + 1, embedding=CDF.0)
sage: a.imag()
1/2*sqrt3
sage: K3.<sqrt3> = QuadraticField(3)
sage: K3.zero()
1/2*sqrt3
Component: number fields
Author: Vincent Delecroix
Branch/Commit: 1cc015d
Reviewer: Jeroen Demeyer
Issue created by migration from https://trac.sagemath.org/ticket/22095