Be able to test `/login/sso/redirect` in Complement (#17986)

Be able to test `/login/sso/redirect` in Complement

Spawning from
https://github.com/element-hq/sbg/pull/421#discussion_r1854926218 where
we have a proxy that intercepts responses to
`/_matrix/client/v3/login/sso/redirect(/{idpId})` in order to upgrade
them to use OAuth 2.0 Pushed Authorization Requests (PAR). We have some
Complement tests in that codebase that go over this flow and these
changes are required [in order for the URL's to line
up](https://github.com/element-hq/synapse/blob/d648c8ce3f4cbf61191b9f5302e405f7b0288677/synapse/rest/client/login.py#L652-L673).

1 files changed, 1 insertions, 0 deletions

diff --git a/synapse/config/logger.py b/synapse/config/logger.py

index cfc1a57107..e5aca36b75 100644
--- a/synapse/config/logger.py
+++ b/synapse/config/logger.py
@@ -360,5 +360,6 @@ def setup_logging(
         "Licensed under the AGPL 3.0 license. Website: https://github.com/element-hq/synapse"
     )
     logging.info("Server hostname: %s", config.server.server_name)
+    logging.info("Public Base URL: %s", config.server.public_baseurl)
     logging.info("Instance name: %s", hs.get_instance_name())
     logging.info("Twisted reactor: %s", type(reactor).__name__)