Match address of host when checking whether to login

What does this MR do and why?

When running Geo QA specs, ensures that we check we are logged into the correct host when determining whether we need to login or not.

Prior to this, we only checked if we are on a login page, which was passing when we were on the primary login page

Closes #349390 (closed)

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

qa/qa/flow/login.rb

@@ -6,8 +6,6 @@ module Login
       module_function
 
       def while_signed_in(as: nil, address: :gitlab, admin: false)
-        Page::Main::Menu.perform {|menu| menu.sign_out_if_signed_in(address) }
-
         sign_in(as: as, address: address, admin: admin)
 
         result = yield
@@ -23,7 +21,10 @@ def while_signed_in_as_admin(address: :gitlab)
       end
 
       def sign_in(as: nil, address: :gitlab, skip_page_validation: false, admin: false)
-        Runtime::Browser.visit(address, Page::Main::Login)
+        unless Page::Main::Login.perform(&:on_login_page?)
+          Page::Main::Menu.perform(&:sign_out) if Page::Main::Menu.perform(&:signed_in?)
+          Runtime::Browser.visit(address, Page::Main::Login)
+        end
 
         Page::Main::Login.perform do |login|
           if admin