Update attachment permalink only when handler is available

[JohnNiang]

What type of PR is this?

/kind improvement
/area core
/area plugin

What this PR does / why we need it:

This PR removes deprecated code that was for backward compatibility and lets reconciler requeue if attachment handler is unavailable.

Which issue(s) this PR fixes:

Fixes #4439

Does this PR introduce a user-facing change?

解决重启后可能无法更新附件链接的问题

[sonarqubecloud]

Quality Gate failed

Failed conditions
C Reliability Rating on New Code (required ≥ A)

See analysis details on SonarCloud

Catch issues before they fail your Quality Gate with our IDE extension SonarLint

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 6 lines in your changes missing coverage. Please review.

Project coverage is 58.07%. Comparing base (6cd8dc8) to head (36c7cd5).
Report is 62 commits behind head on main.

Files with missing lines	Patch %	Lines
...re/attachment/reconciler/AttachmentReconciler.java	0.00%	6 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #6641      +/-   ##
============================================
- Coverage     58.18%   58.07%   -0.11%     
- Complexity     3774     3917     +143     
============================================
  Files           651      670      +19     
  Lines         22125    22971     +846     
  Branches       1538     1576      +38     
============================================
+ Hits          12873    13340     +467     
- Misses         8641     9014     +373     
- Partials        611      617       +6     

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[JohnNiang]

The failing check can be ingored because SonarCloud analyzed old code. I tried to rerun the check, but nothing happened.

[guqing]

/lgtm

[f2c-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: guqing

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• OWNERS [guqing]

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[JohnNiang]

I'm going to merge this PR manually due to invalid check of SonarCloud Code Analysis.