fix: Ensure Finalizer Patch

[ishaansehgal99]

Reason for Change:
This is some code cleanup on ensure finalizer. Main change is moving code into seperate if statement and using a patch instead of update to add finalizer.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 10 lines in your changes missing coverage. Please review.

Project coverage is 59.10%. Comparing base (ed546f0) to head (8c23492).
Report is 13 commits behind head on main.

Files	Patch %	Lines
pkg/controllers/workspace_controller.go	0.00%	10 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #530      +/-   ##
==========================================
- Coverage   61.10%   59.10%   -2.00%     
==========================================
  Files          29       30       +1     
  Lines        2602     2695      +93     
==========================================
+ Hits         1590     1593       +3     
- Misses        921     1010      +89     
- Partials       91       92       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.