`tapioca gem` misses sig for module_function methods of the class variety

When generating sorbet/rbi/gems/code_ownership@1.37.0.rbi with tapioca gem code_ownership module_function defined methods will be created without signatures.

# Gemfile
source "https://rubygems.org"

gem 'tapioca', require: false, :group => [:development, :test]
gem "code_ownership", "1.37.0"

Specifically

# code_ownership.rb

module CodeOwnership
  module_function
  sig { params(klass: T.nilable(T.any(::Module, T::Class[T.anything]))).returns(T.nilable(::CodeTeams::Team)) }
  def for_class(klass); end
end

will be turned into

# code_ownership.rbi

module CodeOwnership
  sig { params(klass: T.nilable(T.any(::Module, T::Class[T.anything]))).returns(T.nilable(::CodeTeams::Team)) }; def for_class(klass); end

  class << self
    def for_class(klass); end
  end
end

should be turned into

# code_ownership.rbi

module CodeOwnership
  sig { params(klass: T.nilable(T.any(::Module, T::Class[T.anything]))).returns(T.nilable(::CodeTeams::Team)); def for_class(klass); end

  class << self
    sig { params(klass: T.nilable(T.any(::Module, T::Class[T.anything]))).returns(T.nilable(::CodeTeams::Team)) }; def for_class(klass); end
  end
end

OR

# code_ownership.rbi

module CodeOwnership
  module_function
  sig { params(klass: T.nilable(T.any(::Module, T::Class[T.anything]))).returns(T.nilable(::CodeTeams::Team)) }; def for_class(klass); end
end

I tried testing this in the rbi gem but it correctly parsed the module to the last one above

I'll gladly dive into the code to fix this if somebody could point out where this is an issue. I did some code diving as you can see already but I'm a bit lost where

Reproduce the generated sorbet/rbi/gems/code_ownership@1.37.0.rbi output with tapioca gem code_ownership, using the code_ownership.rb module_function example. Trace Tapioca's gem RBI generation and compare it with the rbi gem's parsing behavior; done means the generated RBI retains the signature for both the instance and singleton method, or uses module_function as shown.