Improve emqx cm

[terry-xiaoyu]

Fixes

Summary

🤖 Generated by Copilot at bbe3521

This pull request improves the channel management, websocket connection, and proxy protocol features of emqx by fixing some bugs, enhancing the log messages, and adding a macro for the ekka_locker timeout. It affects the files emqx_cm.erl, emqx_ws_connection.erl, emqx_cm_locker.erl, and emqx_connection.erl.

PR Checklist

Please convert it to a draft if any of the following conditions are not met. Reviewers may skip over until all the items are checked:

• Added tests for the changes
• Changed lines covered in coverage report
• Change log has been added to changes/{ce,ee}/(feat|perf|fix)-<PR-id>.en.md files
• For internal contributor: there is a jira ticket to track this change
• If there should be document changes, a PR to emqx-docs.git is sent, or a jira ticket is created to follow up
• Schema changes are backward compatible

Checklist for CI (.github/workflows) changes

• If changed package build workflow, pass this action (manual trigger)
• Change log has been added to changes/ dir for user-facing artifacts update

[coveralls]

Pull Request Test Coverage Report for Build 5009382854

• 6 of 9 (66.67%) changed or added relevant lines in 4 files are covered.
• 33 unchanged lines in 8 files lost coverage.
• Overall coverage increased (+0.2%) to 75.02%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/emqx_cm.erl	2	3	66.67%
src/emqx_connection.erl	0	2	0.0%

Files with Coverage Reduction	New Missed Lines	%
apps/emqx_rule_engine/src/emqx_rule_engine.erl	1	70.72%
src/emqx_const_v2.erl	1	96.77%
src/emqx_broker.erl	2	83.23%
src/emqx_connection.erl	2	91.53%
apps/emqx_web_hook/src/emqx_web_hook.erl	5	93.94%
src/emqx_tls_lib.erl	5	94.38%
src/emqx_reason_codes.erl	6	92.14%
src/emqx_listeners.erl	11	84.07%

Totals
Change from base Build 4957394324:	0.2%
Covered Lines:	14896
Relevant Lines:	19856

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💛 - Coveralls