HTTP 405 trying to load well-known OAuth metadata

[jpmcb]

Describe the bug

When attempting to walk through the auth flow for my server, I get the following:

HTTP 405 trying to load well-known OAuth metadata

This seems to be directly related to: modelcontextprotocol/typescript-sdk#744

To Reproduce

Steps to reproduce the behavior:

1. Have an OAuth server in the protected metadata at a trailing path like so: my-org.okta.com/oauth/abc123
2. Attempt to walk through OAuth
3. Notice error
4. Open console and see the following:

OAuth flow error: Error: HTTP 405 trying to load well-known OAuth metadata
    discoverOAuthMetadata http://localhost:6274/assets/index-CPgI0-gs.js:16611

Expected behavior

OAuth flow to work with any auth server provider

[tomekchime]

Hmm, it looks like modelcontextprotocol/typescript-sdk#652 added OIDC Discovery support and version 0.16.2 pulled in that update, but this bug still exists in inspector.