Improve tracing span naming and server cleanup handling

[molon]

No description provided.

[Copilot]

Pull Request Overview

This PR improves tracing span naming in the queue system to include queue names for better observability, and enhances server cleanup handling to avoid unnecessary error logging when connections are already closed.

• Enhanced tracing spans to include queue names for single-queue operations
• Improved HTTP listener cleanup to suppress expected "use of closed network connection" errors
• Renamed function for better clarity (SetupServer → SetupServerFactory)

Reviewed Changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 1 comment.

File	Description
httpx/server.go	Enhanced error handling for listener cleanup and renamed server setup function
goquex/tracing.go	Improved span naming to include queue names for better tracing visibility

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