backport: Fix error message when sent HTTP GET to RPC

[chenyukang]

What problem does this PR solve?

After RPC framework changed, if we sent an GET request to RPC endpoint, the error message has changed to:

Missing request extension: Extension of type `jsonrpc_utils::stream::StreamServerConfig` was not found. Perhaps you forgot to add it? See `axum::Extension`.%

Let's keep the same message with the old version.

Issue Number: close #4309

Problem Summary:

What is changed and how it works?

Add a special handler for RPC endpoint, distinguished from the Websockets configuration.

What's Changed:

Related changes

• PR to update owner/repo:
• Need to cherry-pick to the release branch

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code ci-runs-only: [ quick_checks,linters ]

Side effects

• Performance regression
• Breaking backward compatibility

Release note

Title Only: Include only the PR title in the release note.