[fix] Fix possibly deadlock

[ldmonster]

Overview

Replaced synchronization primitives with atomics to eliminate deadlock potential
Introduced a thread-safe status management system with TaskQueueStatus
Added deadlock prevention mechanisms in queue operations

What this PR does / why we need it

Special notes for your reviewer

[Copilot]

Pull Request Overview

This PR fixes a potential deadlock issue by replacing queue iteration and filtering methods with their snapshot equivalents and updating function signatures to support context-based iteration.

• Replace q.Iterate() with q.IterateSnapshot() to avoid holding locks during iteration
• Replace q.Filter() with q.DeleteFunc() for safer task removal operations
• Update dependency version and add context parameter to queue iteration methods

Reviewed Changes

Copilot reviewed 8 out of 9 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
pkg/task/service/converge.go	Replace Iterate with IterateSnapshot for counting tasks
pkg/task/queue/queue.go	Replace Iterate with IterateSnapshot and Filter with DeleteFunc
pkg/module_manager/module_manager.go	Replace Iterate with IterateSnapshot for task enumeration
pkg/addon-operator/queue_test.go	Update test code to use IterateSnapshot
pkg/addon-operator/queue.go	Replace Iterate with IterateSnapshot and Filter with DeleteFunc
pkg/addon-operator/operator_test.go	Add prometheus registry setup and use IterateSnapshot
pkg/addon-operator/metrics.go	Add context parameter to queue iteration method
go.mod	Update shell-operator dependency and prometheus client

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}