fix: delete existing release before recreate

gh release edit does not support --generate-notes, so delete
and recreate the release when it already exists for the same tag.

Co-Authored-By: Claude <noreply@anthropic.com>

Author: JusterZhu

.github/workflows/publish-nuget.yml

@@ -67,14 +67,14 @@ jobs:
           GH_TOKEN: ${{ github.token }}
         run: |
           TAG="v${{ inputs.version }}"
+          if gh release view "$TAG" --json tagName &>/dev/null; then
+            gh release delete "$TAG" --yes
+          fi
           gh release create "$TAG" \
             artifacts/*.nupkg \
             --title "$TAG" \
             --generate-notes \
-            --verify-tag || \
-          gh release edit "$TAG" \
-            --title "$TAG" \
-            --generate-notes
+            --verify-tag
 
       - name: Push NuGet package to NuGet.org (Trusted Publishing via OIDC)
         run: |