fix: mcp server support customize sse endpoint

[JunJieLiu51520]

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[RexSheng]

应该使用WebMvcSseServerTransportProvider(om,baseurl，messageendopoint,sseendpont)的这个构造函数吧。new WebMvcSseServerTransportProvider(objectMapper, serverProperties.getBaseUrl(), serverProperties.getSseMessageEndpoint(), serverProperties.getSseEndpoint());

[dev-jonghoonpark]

🙌 Please fix the DCO check by signing your commit. git commit --amend --signoff

• The commit 7073d8c is not signed.

[tzolov]

Thanks @JunJieLiu51520 rebased, squashed and merged at 4e313a9dc6c2d54d886eda0e2d7eef892f126e5a