Fix: gateway message is wrong

[chivalryq]

Description of your changes

gateway message is wrong. "host" is always now.

Fixes #

I have:

• Read and followed KubeVela's contribution process.
• Related Docs updated properly. In a new feature or configuration option, an update to the documentation is necessary.
• Run make reviewable to ensure this PR is ready for review.
• Added backport release-x.y labels to auto-backport this PR if necessary.

How has this code been tested

Special notes for your reviewer

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[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -36.00 ⚠️

Comparison is base (1afdb09) 61.66% compared to head (23ac69a) 25.66%.

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #5748       +/-   ##
===========================================
- Coverage   61.66%   25.66%   -36.00%     
===========================================
  Files         217      214        -3     
  Lines       30717    30582      -135     
===========================================
- Hits        18941     7850    -11091     
- Misses      10037    21679    +11642     
+ Partials     1739     1053      -686     

Flag	Coverage Δ
core-unittests	?
e2e-multicluster-test	25.60% <ø> (-0.03%)	⬇️
e2e-rollout-tests	22.39% <ø> (+0.04%)	⬆️
e2etests	?

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see 158 files with indirect coverage changes

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[github-actions]

Successfully created backport PR for release-1.7:

• [Backport release-1.7] Fix: gateway message is wrong #5751

[github-actions]

Successfully created backport PR for release-1.8:

• [Backport release-1.8] Fix: gateway message is wrong #5752