Fix flickering package feature tests

Fixes #6034

src/api/spec/bootstrap/features/webui/packages_spec.rb

@@ -58,8 +58,6 @@
   end
 
   scenario 'deleting a package' do
-    skip('FIXME: This test is flickering hard.')
-
     login user
     visit package_show_path(package: package, project: user.home_project)
     click_link('Delete package')
@@ -69,7 +67,7 @@
       click_button('Delete')
     end
 
-    expect(find('#flash-messages')).to have_text('Package was successfully removed.')
+    expect(page).to have_css('#flash', text: 'Package was successfully removed.')
   end
 
   scenario 'requesting package deletion' do
@@ -90,8 +88,6 @@
   end
 
   scenario "changing the package's devel project" do
-    skip('FIXME: This test is flickering hard.')
-
     login user
 
     visit package_show_path(package: package_with_develpackage, project: user.home_project)
@@ -101,10 +97,9 @@
     within('#change-devel-request-modal') do
       fill_in('devel_project', with: third_project.name)
       fill_in('description', with: 'Hey, why not?')
-      click_button('Accept')
+      click_button('Create')
     end
 
-    find('#flash-messages', visible: false)
     request = BsRequest.where(description: 'Hey, why not?', creator: user.login, state: 'review')
     expect(request).to exist
     expect(page).to have_current_path("/request/show/#{request.first.number}")