Remove timeout dependency from SSE tests

[codingkiddo]

Summary

Remove the GNU timeout command dependency from SSE endpoint testing.

The existing implementation launches curl through:

timeout 10 curl ...

However, timeout is not available by default on macOS, which causes the SSE test process to fail before curl is started.

This change uses curl's built-in timeout support instead:

curl --max-time 10 ...

Changes

• Remove the external GNU timeout dependency.
• Use curl --max-time 10 to limit SSE test duration.
• Preserve the existing 10-second timeout behavior.

Testing

Verified locally on macOS where:

command -v timeout

returns no command, while curl is available.

Also verified that the installed curl supports:

--max-time

This keeps the SSE test behavior while improving portability across environments.