Invalid type for Tapioca::Dsl::Helpers::ActiveRecordColumnTypeHelper#column_type_for

[cquinones100]

@constant.primary_key can be nil for models that don't have a primary key, so this sig should be updated to the following:

sig { params(column_name: T.nilable(String)).returns([String, String]) }
  def column_type_for(column_name)

I discovered this issue when requiring sorbet-runtime as part of bin/tapioca. I think we can make this change without downstream effects since the runtime behavior tolerates nil. I'm happy to make a PR to implement this if there are no concerns.

[amomchilov]

Hey @cquinones100, nice catch, thanks for reporting this.

Would you be interesting in submitting a PR for this? It would make for a great first contribution!

[cquinones100]

PR submitted, thanks @amomchilov!