errorshow is frequently failing CI

[d-netto]

      From worker 6:	Warning: detected a stack overflow; program state may be corrupted, so further execution might be unreliable.
errorshow                                        (6) |         failed at 2024-10-16T01:34:01.492
Test Failed at C:\buildkite-agent\builds\win2k22-amdci6-2\julialang\julia-master\julia-69c3a6dbdf\share\julia\test\errorshow.jl:225
  Expression: typeof(err) === $(Expr(:escape, :MethodError))
   Evaluated: StackOverflowError === MethodError

Spotted in https://buildkite.com/julialang/julia-master/builds/41029#019291b3-5876-493c-abd3-eae7f2fe2fd5 and https://buildkite.com/julialang/julia-master/builds/41041#01929278-950b-4c91-957c-6b09eefa048c.

[fredrikekre]

Fixed by #56184