Refactor azure-dev.yml to set default working directory for the build job

.github/workflows/azure-dev.yml

@@ -1,12 +1,16 @@
+name: .NET Aspire + AZD
+
 on:
     workflow_dispatch:
     push:
-        # Run when commits are pushed to mainline branch (main or master)
-        # Set this to the mainline branch you are using
-        branches:
-        - main
-        - master
-  
+      branches: [main]
+      paths:
+        - 'aspire-sample/**'
+    pull_request:
+      branches: [main]
+      paths:
+        - 'aspire-sample/**'
+    
 # GitHub Actions workflow to deploy to Azure using azd
 # To configure required secrets for connecting to Azure, simply run `azd pipeline config`
 
@@ -59,7 +63,7 @@ jobs:
           env:
             AZURE_CREDENTIALS: ${{ secrets.AZURE_CREDENTIALS }}
   
-        - name: Provision Infrastructure
+        - name: Restore Aspire Workload
           run: dotnet workload restore
           
         - name: Provision Infrastructure