ci: enable PR duplicate packages check (#17829)

Author: ocavue

.github/workflows/diff-dependencies.yml

@@ -21,6 +21,3 @@ jobs:
 
       - name: Create Diff
         uses: e18e/action-dependency-diff@9a7f09f5f2993256322e0db17ee4c8d9339dab77 # v1.7.1
-        with:
-          # We’re using this package primarily to track size changes, not as worried about duplicates
-          duplicate-threshold: 100