Merge pull request #25020 from jramnai/registration-api

docs/swagger.yaml

.../js/spec/student_account/account_settings_factory_spec.js

...c/js/spec/student_account/account_settings_fields_spec.js

lms/static/js/spec/student_account/emailoptin_spec.js

lms/static/js/spec/student_account/login_spec.js

lms/static/js/spec/student_account/register_spec.js

lms/static/js/student_account/emailoptin.js

...tatic/js/student_account/views/account_settings_fields.js

openedx/core/djangoapps/user_api/legacy_urls.py

openedx/core/djangoapps/user_api/tests/test_views.py

openedx/core/djangoapps/user_api/urls.py

openedx/core/djangoapps/user_api/views.py

openedx/core/djangoapps/user_authn/urls_common.py

openedx/core/djangoapps/user_authn/views/login.py