fix: w3cwebsocket connect error headle

[menshibin]

Description

Fix w3cwebsocket connect error headle.

Jira: https://jira.taosdata.com:18080/browse/TD-

Checklist

Please check the items in the checklist if applicable.

• Is the user manual updated?
• Are the test cases passed and automated?
• Is there no significant decrease in test coverage?

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.65%. Comparing base (d1997b7) to head (8a661f5).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #83   +/-   ##
=======================================
  Coverage   79.65%   79.65%           
=======================================
  Files          24       24           
  Lines        1819     1819           
  Branches      251      251           
=======================================
  Hits         1449     1449           
  Misses        284      284           
  Partials       86       86           

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