pr feedback and try fix tests

Author: yao-msft

src/PowerShell/Microsoft.WinGet.Configuration.Engine/Commands/ConfigurationCommand.cs

@@ -433,7 +433,13 @@ private async Task InstallDSCv3Package(OpenConfigurationParameters openParams)
                 {{
                     Install-Module -Name {WinGetClientModule} -Confirm:$False -Force
                 }}
-                Install-WingetPackage -Id {DSCv3PackageId} -Source msstore");
+
+                $InstallResult = Install-WingetPackage -Id {DSCv3PackageId} -Source msstore
+                if ($InstallResult.Status -ne 'Ok')
+                {{
+                    Write-Error 'Failed to install DSCv3 package.' -ErrorAction Stop
+                }}
+                ");
 
             await installDSCv3.InvokeAsync();
 

src/PowerShell/tests/Microsoft.WinGet.Configuration.Tests.ps1

@@ -22,6 +22,9 @@ BeforeAll {
 
     Import-Module Microsoft.WinGet.Configuration
 
+    # The msstore source will be used to install DSCv3 package
+    wingetdev source reset --force
+
     function CreatePolicyKeyIfNotExists()
     {
         $registryExists = test-path  -Path $wingetGroupPolicyRegistryRoot