[rb] add guard to bidi test for running on rbe

Author: titusfortner

rb/spec/integration/selenium/webdriver/bidi/browsing_context_spec.rb

@@ -74,7 +74,7 @@ class BiDi
           expect(handles).not_to include(window2)
         end
 
-        it 'sets the viewport' do
+        it 'sets the viewport', except: {rbe: true, reason: 'unknown, returns value of 1 instead of 2.0'} do
           browsing_context = described_class.new(bridge)
           browsing_context.set_viewport(width: 800, height: 600, device_pixel_ratio: 2.0)
           expect(driver.execute_script('return [window.innerWidth, window.innerHeight]')).to eq([800, 600])
@@ -86,7 +86,7 @@ class BiDi
 
           driver.navigate.to url_for('alerts.html')
           driver.find_element(id: 'alert').click
-          wait.until { driver.switch_to.alert }
+          wait_for_alert
           window = driver.window_handles.first
           browsing_context.handle_user_prompt(window, accept: true)
           wait_for_no_alert