breakage under RegistryTools 2.4.0

[palday]

RegistryTools v2.4.0 broke package consistency checks because several calls now dispatched to methods for UUID, which were undefined, instead of methods for String. I observed this in a private registry with such errors as

  Test threw exception
  Expression: _spacify_hyphens(mapvalues(f_outer, compressed)) == _spacify_hyphens(mapvalues(f_outer, compat))
  MethodError: no method matching length(::Pkg.Versions.VersionSpec)
  The function `length` exists, but no method is defined for this combination of argument types.

  MethodError: no method matching _spacify_hyphens(::Base.UUID)

cc @KristofferC

[ericphanson]

observed on staging as well https://julialang.slack.com/archives/C02174EA421/p1762962840165769. The private registry should use a manifest :)