chore: refactor JavaScript setup in workflows to use a composite action for pnpm installation

Author: ascott18

.github/actions/setup-js/action.yml

@@ -0,0 +1,24 @@
+name: Setup JS
+description: Setup Node.js, pnpm, and install dependencies
+
+inputs:
+  working-directory:
+    description: Directory to run pnpm install in
+    required: false
+    default: ${{ github.workspace }}
+
+runs:
+  using: composite
+  steps:
+    - uses: actions/setup-node@v6
+      with:
+        node-version: 24.x
+
+    - name: Install pnpm
+      shell: bash
+      run: npm install -g pnpm@11
+
+    - name: Install dependencies
+      shell: bash
+      working-directory: ${{ inputs.working-directory }}
+      run: pnpm install --frozen-lockfile

.github/workflows/copilot-setup-steps.yml

@@ -35,11 +35,7 @@ jobs:
             9.0.x
             10.0.x
 
-      - name: Install pnpm
-        run: npm install -g pnpm@11
-
-      - name: Install JavaScript dependencies
-        run: pnpm install --frozen-lockfile
+      - uses: ./.github/actions/setup-js
 
       - name: Restore .NET packages
         run: dotnet restore

.github/workflows/part-build.yml

@@ -23,8 +23,7 @@ jobs:
             8.0.x
             9.0.x
 
-      - run: npm install -g pnpm@11
-      - run: pnpm install --frozen-lockfile
+      - uses: ./.github/actions/setup-js
       - run: dotnet restore
       - run: dotnet build --no-restore --configuration Release /WarnAsError
       - run: dotnet test --no-build --configuration Release
@@ -51,9 +50,7 @@ jobs:
             8.0.x
             9.0.x
 
-      - run: npm install -g pnpm@11
-      - run: pnpm install --frozen-lockfile
-        working-directory: ${{ github.workspace }}
+      - uses: ./.github/actions/setup-js
 
       - run: pnpm coalesce
       - run: pnpm build
@@ -81,11 +78,7 @@ jobs:
       - name: Update npm
         run: npm install -g npm@latest
 
-      - name: Install pnpm
-        run: npm install -g pnpm@11
-
-      - run: pnpm install --frozen-lockfile
-        working-directory: ${{ github.workspace }}
+      - uses: ./.github/actions/setup-js
 
       - run: pnpm lint
 
@@ -116,9 +109,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - run: npm install -g pnpm@11
-      - run: pnpm install --frozen-lockfile
-        working-directory: ${{ github.workspace }}
+      - uses: ./.github/actions/setup-js
 
       - name: pnpm test
         run: pnpm test
@@ -147,9 +138,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - run: npm install -g pnpm@11
-      - run: pnpm install --frozen-lockfile
-        working-directory: ${{ github.workspace }}
+      - uses: ./.github/actions/setup-js
 
       - name: pnpm test
         run: pnpm test
@@ -183,13 +172,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - uses: actions/setup-node@v6
-        with:
-          node-version: 24.x
-
-      - run: npm install -g pnpm@11
-      - run: pnpm install --frozen-lockfile
-        working-directory: ${{ github.workspace }}
+      - uses: ./.github/actions/setup-js
 
       - run: pnpm build-local-deps # build coalesce-vue
       - run: pnpm build
@@ -220,9 +203,7 @@ jobs:
           # fetch all commits to get last updated time or other git log info
           fetch-depth: 0
 
-      - run: npm install -g pnpm@11
-      - run: pnpm install --frozen-lockfile
-        working-directory: ${{ github.workspace }}
+      - uses: ./.github/actions/setup-js
 
       - name: Build docs
         run: pnpm build
@@ -276,13 +257,11 @@ jobs:
             8.0.x
             9.0.x
 
-      - name: Use Node.js
-        uses: actions/setup-node@v6
+      - uses: actions/setup-node@v6
         with:
           node-version: 24.x
 
-      - name: Install pnpm
-        run: npm install -g pnpm@11
+      - run: npm install -g pnpm@11
 
       - name: Download Artifacts
         uses: actions/download-artifact@v8