Add option to disable tracing trait in JavaScriptKit tests

Author: kateinoigakukun

.github/workflows/test.yml

@@ -14,6 +14,8 @@ jobs:
               download-url: https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-RELEASE/swift-6.1-RELEASE-ubuntu22.04.tar.gz
             wasi-backend: Node
             target: "wasm32-unknown-wasi"
+            env: |
+              JAVASCRIPTKIT_DISABLE_TRACING_TRAIT=1
           - os: ubuntu-24.04
             toolchain:
               download-url: https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT-SNAPSHOT-2025-12-01-a/swift-DEVELOPMENT-SNAPSHOT-2025-12-01-a-ubuntu24.04.tar.gz
@@ -36,6 +38,12 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v6
+      - name: Export matrix env
+        if: ${{ matrix.entry.env != '' && matrix.entry.env != null }}
+        run: |
+          cat <<'EOF' >> "$GITHUB_ENV"
+          ${{ matrix.entry.env }}
+          EOF
       - uses: ./.github/actions/install-swift
         with:
           download-url: ${{ matrix.entry.toolchain.download-url }}