Fix CI: disable code signing for test builds

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: nickustinov

.github/workflows/test.yml

@@ -28,7 +28,10 @@ jobs:
           xcodebuild test \
             -scheme macOSBridgeTests \
             -destination "platform=macOS" \
-            -resultBundlePath TestResults.xcresult
+            -resultBundlePath TestResults.xcresult \
+            CODE_SIGN_IDENTITY="" \
+            CODE_SIGNING_REQUIRED=NO \
+            CODE_SIGNING_ALLOWED=NO
 
       - name: Upload test results
         uses: actions/upload-artifact@v4