Not adding default labels if PR is already labeled

[NewtonSander]

Introduction

There's a bug with the labeler workflow, it always adds the default label_review and release:patch even if other labels were already assigned to the PR.

Changes

This PR adds a condition to run the labeler, not adding the default labels if labels were already assigned to the PR

[codecov-commenter]

Codecov Report

Patch and project coverage have no change.

Comparison is base (4b5e4a1) 73.47% compared to head (d7d8d27) 73.47%.

:exclamation: Current head d7d8d27 differs from pull request most recent head 3e31650. Consider uploading reports for the commit 3e31650 to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #126 +/- ## ======================================= Coverage 73.47% 73.47% ======================================= Files 27 27 Lines 2055 2055 ======================================= Hits 1510 1510 Misses 545 545 ```

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