Describe the bug
When using the MCP server in HTTP mode, it responds back in SSE format instead of HTTP/JSON

To Reproduce
Steps to reproduce the behavior:
Connect to the MCP via a client: MCP Inspector, Cline, simple curl, etc
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Expected behavior
Get an HTTP/JSON format response. SSE is returned instead

Screenshots

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
Add any other context about the problem here.