Preserve canonical core settings in cloud GHC traces

.github/workflows/nix.yml

@@ -107,7 +107,7 @@ jobs:
           original="(builtins.getFlake \"$flake_ref\").hydraJobs.x86_64-linux.\"lib:simplex-chat\""
           timeout --kill-after=30s 7200s nice -n 10 nix build \
             --file scripts/nix/trace-native-ghc.nix --arg original "$original" \
-            --no-link -L --keep-failed --max-jobs 1 --cores 1 --timeout 7200 \
+            --no-link -L --keep-failed --max-jobs 1 --timeout 7200 \
             2>&1 | tee native-linux-ghc-phase-trace.log
 
       - name: Upload native Linux GHC phase log