Install the wasm32-unknown-emscripten Rust target in Emscripten CI

Author: Eclips4

.github/workflows/reusable-emscripten.yml

@@ -55,6 +55,10 @@ jobs:
       uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
       with:
         python-version: '3.x'
+    - uses: dtolnay/rust-toolchain@f133eefe930d61f0d9371efd474daf0125ed3dd1 # 1.95.0
+      with:
+        toolchain: 1.95.0
+        targets: wasm32-unknown-emscripten
     - name: "Runner image version"
       run: echo "IMAGE_OS_VERSION=${ImageOS}-${ImageVersion}" >> "$GITHUB_ENV"
     - name: "Install Emscripten"