[ci] Use newly official github action to install emsdk (#26662)

See https://github.com/emscripten-core/setup-emsdk

Author: sbc100

.github/workflows/ci.yml

@@ -32,6 +32,13 @@ jobs:
     runs-on: ubuntu-latest
     if: github.event_name == 'pull_request'
     steps:
+      - name: Install emsdk
+        uses: emscripten-core/setup-emsdk@v16
+        with:
+          version: tot
+      - name: Set EM_CONFIG
+        run:
+          echo "EM_CONFIG=$EMSDK/.emscripten" >> $GITHUB_ENV
       - name: Checkout repo
         uses: actions/checkout@v4
         with:
@@ -42,19 +49,6 @@ jobs:
           which python3
           python3 --version
           python3 -m pip install -r requirements-dev.txt
-      - name: Install emsdk
-        run: |
-          EM_CONFIG=$HOME/emsdk/.emscripten
-          echo "emscripten config file: $EM_CONFIG"
-          echo "EM_CONFIG=$EM_CONFIG" >> $GITHUB_ENV
-          curl -# -L -o ~/emsdk-main.tar.gz https://github.com/emscripten-core/emsdk/archive/main.tar.gz
-          tar -C ~ -xf ~/emsdk-main.tar.gz
-          mv ~/emsdk-main ~/emsdk
-          cd ~/emsdk
-          ./emsdk install tot
-          ./emsdk activate tot
-          echo "emscripten config file ($EM_CONFIG) contents:"
-          cat $EM_CONFIG
       - name: Check test expectations on target branch
         # Skip this step for rebaseline PRs, since the target branch is expected
         # to be out of date in this case.

.github/workflows/rebaseline-tests.yml

@@ -17,6 +17,13 @@ jobs:
     env:
       GH_TOKEN: ${{ secrets.EMSCRIPTEN_BOT_TOKEN }}
     steps:
+      - name: Install emsdk
+        uses: emscripten-core/setup-emsdk@v16
+        with:
+          version: tot
+      - name: Set EM_CONFIG
+        run:
+          echo "EM_CONFIG=$EMSDK/.emscripten" >> $GITHUB_ENV
       - name: Checkout repo
         uses: actions/checkout@v4
         with:
@@ -27,20 +34,6 @@ jobs:
           which python3
           python3 --version
           python3 -m pip install -r requirements-dev.txt
-      - name: Install emsdk
-        run: |
-          EM_CONFIG=$HOME/emsdk/.emscripten
-          echo $EM_CONFIG
-          curl -# -L -o ~/emsdk-main.tar.gz https://github.com/emscripten-core/emsdk/archive/main.tar.gz
-          tar -C ~ -xf ~/emsdk-main.tar.gz
-          mv ~/emsdk-main ~/emsdk
-          cd ~/emsdk
-          ./emsdk install tot
-          ./emsdk activate tot
-          echo "JS_ENGINES = [NODE_JS]" >> $EM_CONFIG
-          echo "final config:"
-          cat $EM_CONFIG
-          echo "EM_CONFIG=$EM_CONFIG" >> $GITHUB_ENV
       - name: Rebaseline tests
         run: |
           git config user.name emscripten-bot