return wu result from inner job (#42647)

fixes #42423

changelogs/fragments/42647-win_updates.yaml

@@ -0,0 +1,2 @@
+bugfixes:
+- win_updates - fixed module return value is lost in error in some cases (https://github.com/ansible/ansible/pull/42647)

lib/ansible/modules/windows/win_updates.ps1

@@ -355,6 +355,8 @@ $update_script_block = {
         }
         
         Write-DebugLog -msg "Return value:`r`n$(ConvertTo-Json -InputObject $result -Depth 99)"
+
+        return $result
     }
 
     $check_mode = $arguments.check_mode