Warning -Woverloaded-virtual triggering in series_flint.h

[bjodah]

When building symengine with gcc-14 the following warning is generated:

In file included from /home/runner/work/symengine/symengine/symengine/series_generic.h:11,
                 from /home/runner/work/symengine/symengine/symengine/visitor.h:15,
                 from /home/runner/work/symengine/symengine/symengine/lambda_double.h:8,
                 from /home/runner/work/symengine/symengine/symengine/cwrapper.cpp:10:
/home/runner/work/symengine/symengine/symengine/series.h:128:23: error: ‘Teuchos::RCP<const SymEngine::Number> SymEngine::SeriesBase<Poly, Coeff, Series>::pow(const SymEngine::Number&) const [with Poly = SymEngine::fmpq_poly_wrapper; Coeff = SymEngine::fmpq_wrapper; Series = SymEngine::URatPSeriesFlint]’ was hidden [-Werror=overloaded-virtual=]
  128 |     RCP<const Number> pow(const Number &other) const override
      |                       ^~~
In file included from /home/runner/work/symengine/symengine/symengine/visitor.h:17:
/home/runner/work/symengine/symengine/symengine/series_flint.h:41:18: note:   by ‘static SymEngine::fqp_t SymEngine::URatPSeriesFlint::pow(const SymEngine::fqp_t&, int, unsigned int)’
   41 |     static fqp_t pow(const fqp_t &s, int n, unsigned prec);
      |                  ^~~
cc1plus: all warnings being treated as errors

I haven't looked much at this before, why is the method static? Is it public API, if not I guess we could rename the method to e.g. power?