Desktop PWAs: Run AppContextMenuTest with BMO

AppListTestBase was recently updated to better support
kDesktopPWAsWithoutExtensions.

AppContextMenuTest tests pass even if the flag is enabled.

Bug: 1082877
Change-Id: I8306a6e5492c8fe66080bd3e0f7157a921755065
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2235223
Auto-Submit: Eric Willigers <ericwilligers@chromium.org>
Reviewed-by: Nancy Wang <nancylingwang@chromium.org>
Commit-Queue: Eric Willigers <ericwilligers@chromium.org>
Cr-Commit-Position: refs/heads/master@{#776921}

chrome/browser/ui/app_list/app_context_menu_unittest.cc

@@ -626,8 +626,8 @@ TEST_P(AppContextMenuTest, InternalAppMenu) {
   }
 }
 
-// TODO(crbug.com/1082877): Test with BMO enabled.
 INSTANTIATE_TEST_SUITE_P(All,
                          AppContextMenuTest,
-                         ::testing::Values(ProviderType::kBookmarkApps),
+                         ::testing::Values(ProviderType::kBookmarkApps,
+                                           ProviderType::kWebApps),
                          web_app::ProviderTypeParamToString);