fix(hooks): always remove finalizers on create if hook exists

[agaudreault]

partial cherry-pick of #754 to mitigate argoproj/argo-cd#23226 on 3.0.

This does not fix the codepaths that do not remove the finalizers, but allows new sync to work correctly to remediate the issue.

[sonarqubecloud]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

❌ Patch coverage is 40.90909% with 13 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (release-3.0@89c110b). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
pkg/sync/sync_context.go	40.90%	13 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff               @@
##             release-3.0     #761   +/-   ##
==============================================
  Coverage               ?   47.30%           
==============================================
  Files                  ?       64           
  Lines                  ?     6557           
  Branches               ?        0           
==============================================
  Hits                   ?     3102           
  Misses                 ?     3198           
  Partials               ?      257           

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