* fix SSEClientTransport endpoint process with none directory sse path
* fix SSEClientTransport endpoint process with none directory sse path
* Refactor `SseTransportTest` to use `route` for better clarity and update server handling with suspend functions.
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Co-authored-by: tpp-builder <tpp-builder@alibaba-inc.com>
Co-authored-by: devcrocod <devcrocod@gmail.com>
Co-authored-by: Leonid Stashevsky <e5l@users.noreply.github.com>