OAuth2CallbackPath using https when no TLS is defined

[n10000k]

Describe the bug
When running locally and using OAuth2CallbackPath - /callback It will pass https:// protocol in the url callback when the server TLS settings are not found and defaults to http.

Logs for TLS:

{"level":"info","msg":"TLS settings not found, defaulting to HTTP","time":"2024-02-01T00:00:00Z"}

Route:

callback: Path("/callback")
    -> grantCallback()
    -> <shunt>;

To Reproduce
Run from localhost with no TLS config, add the callback uri, set your oauth2 provider callback to be http://localhost/callback

Expected behavior
Not to pass https:// and use http:// when no TLS config defined

Observed behavior
https://localhost/callback is being passed, which doesn't match the redirect uri on the oauth2 provider.

[AlexanderYastrebov]

Hello, please check whether -oauth2-grant-insecure flag introduced by #2457 solves your problem.

[n10000k]

Hello, please check whether -oauth2-grant-insecure flag introduced by #2457 solves your problem.

Great this works, thanks. Couldn't see this in the docs?

[AlexanderYastrebov]

Great this works, thanks. Couldn't see this in the docs?

Created #2899