Update selection specs to be on blur only

spec/support/shared_examples/features/rich_text_editor/selection_shared_examples.rb

@@ -24,6 +24,9 @@
 
       # select all text
       type_in_content_editor [modifier_key, 'a']
+
+      # click the More options button to trigger a blur event
+      click_on "More options"
     end
 
     it 'renders selected text in a .content-editor-selection class' do