Update Azure Static Web Apps workflow with restore step

Added restore step to ensure required WASM workloads are used for the dotnet project.

Author: ilonatommy

.github/workflows/azure-static-web-apps-ashy-island-008420303.yml

@@ -20,6 +20,12 @@ jobs:
           submodules: true
           lfs: false
 
+      - name: Ensure required WASM workloads
+        working-directory: ./dotnet
+        run: |
+          # Restore workload manifests for the dotnet project (will populate needed workload info)
+          dotnet workload restore
+
       - name: Build dotnet
         working-directory: ./react
         run: |
@@ -56,3 +62,4 @@ jobs:
         with:
           azure_static_web_apps_api_token: ${{ secrets.AZURE_STATIC_WEB_APPS_API_TOKEN_ASHY_ISLAND_008420303 }}
           action: "close"
+