bug: return_to query parameter is not enforced if user is already logged-on

[supercairos]

Preflight checklist

• I could not find a solution in the existing issues, docs, nor discussions.
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• I have read and am following this repository's Contribution Guidelines.
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Describe the bug

If a user is already logged-in and tries to to use the browser registration flow,
he only gets redirected to the default_redirect_url instead of observing the return_to parameter setup in the URL.

For comparaison, the Login flow works as intended;

Reproducing the bug

1. Login to your kratos instance
2. try to query a browser registration flow with a return_to setup
3. notice you're redirected to the default page;

Relevant log output

No response

Relevant configuration

selfservice:
  default_browser_return_url: XXXX
  allowed_return_urls:
    - YYY

Version

v0.10.1

On which operating system are you observing this issue?

Linux

In which environment are you deploying?

Kubernetes

Additional Context

Bug seams to be around here:

Registration:
https://github.com/ory/kratos/blob/master/selfservice/flow/registration/handler.go#L252

Login:
https://github.com/ory/kratos/blob/master/selfservice/flow/login/handler.go#L353