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

[agaudreault]

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

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

[codecov]

Codecov Report

❌ Patch coverage is 62.16216% with 14 lines in your changes missing coverage. Please review.
✅ Project coverage is 47.46%. Comparing base (8849c3f) to head (97e9173).
⚠️ Report is 58 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/sync/sync_context.go	62.16%	10 Missing and 4 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #770      +/-   ##
==========================================
- Coverage   54.26%   47.46%   -6.80%     
==========================================
  Files          64       64              
  Lines        6164     6579     +415     
==========================================
- Hits         3345     3123     -222     
- Misses       2549     3199     +650     
+ Partials      270      257      -13     

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[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