Fix configure export test tear down (#5184)

When I was reviewing the pipeline runs, I always saw configure export
test tear down time out when uninstalling the test package. Then I
realized the test source was reset before we call uninstall and causing
the package to be not found.

src/AppInstallerCLIE2ETests/ConfigureExportCommand.cs

@@ -37,9 +37,9 @@ public void BaseSetup()
         [OneTimeTearDown]
         public void BaseTeardown()
         {
+            TestCommon.RunAICLICommand("uninstall", "AppInstallerTest.TestPackageExport");
             TestCommon.TearDownTestSource();
             WinGetSettingsHelper.ConfigureFeature("configureExport", false);
-            TestCommon.RunAICLICommand("uninstall", "AppInstallerTest.TestPackageExport");
         }
 
         /// <summary>