fix: New kube applier for server side diff dry run with refactoring (#21488)

[andrii-korotkov-verkada]

Fixes: #21488

Use the new kube applier from gitops engine, which avoid the error arising from concatenating kube command stderr to stdout.

Needs to be cherry-picked to v2.14, but need a manual PR due to referencing v3 vs v2.

Checklist:

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• The title of the PR states what changed and the related issues number (used for the release note).
• The title of the PR conforms to the Toolchain Guide
• I've included "Closes [ISSUE #]" or "Fixes [ISSUE #]" in the description to automatically close the associated issue.
• I've updated both the CLI and UI to expose my feature, or I plan to submit a second PR with them.
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• I've updated documentation as required by this PR.
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• My build is green (troubleshooting builds).
• My new feature complies with the feature status guidelines.
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[codecov]

Codecov Report

Attention: Patch coverage is 33.33333% with 16 lines in your changes missing coverage. Please review.

Project coverage is 55.63%. Comparing base (4a1d0f3) to head (1c86dff).

Files with missing lines	Patch %	Lines
util/kube/kubectl.go	10.00%	9 Missing ⚠️
controller/state.go	25.00%	3 Missing ⚠️
cmd/argocd/commands/admin/app.go	71.42%	1 Missing and 1 partial ⚠️
controller/sync.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #21749      +/-   ##
==========================================
- Coverage   55.63%   55.63%   -0.01%     
==========================================
  Files         339      339              
  Lines       56813    56827      +14     
==========================================
+ Hits        31608    31615       +7     
- Misses      22553    22559       +6     
- Partials     2652     2653       +1     

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