Add coverage for keyboard shortcut to open Web IDE

See https://gitlab.com/gitlab-org/quality/testcases/-/issues/2250

qa/qa/page/project/show.rb

@@ -154,6 +154,10 @@ module QA
           click_element(:web_ide_button)
         end
 
+        def open_web_ide_via_shortcut
+          page.driver.send_keys('.')
+        end
+
         def has_edit_fork_button?
           has_element?(:web_ide_button, text: 'Edit fork in Web IDE')
         end

qa/qa/specs/features/browser_ui/3_create/web_ide/link_to_line_in_web_ide_spec.rb

@@ -21,7 +21,8 @@ module QA
       it 'can link to a specific line of code in Web IDE', testcase: 'https://gitlab.com/gitlab-org/quality/testcases/-/quality/test_cases/1844' do
         project.visit!
 
-        Page::Project::Show.perform(&:open_web_ide!)
+        # Open Web IDE by using a keyboard shortcut
+        Page::Project::Show.perform(&:open_web_ide_via_shortcut)
 
         Page::Project::WebIDE::Edit.perform do |ide|
           ide.select_file('app.js')