[E2E] Fixing the submenu_item for Project and Group

What does this MR do and why?

There were few context switcher related changes done in !130071 (merged) but it was missed in this cleanup MR !130021 (merged)

There are few failures #424053 (closed) and #424054 (closed) due to this.

The changes were taken care of as part of file qa/qa/page/project/sub_menus/super_sidebar/main.rb, but the super_sidebar folder is removed in !130021 (merged), so it needs to be fixed in qa/qa/page/project/sub_menus/main.rb

Screenshots or screen recordings

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Before	After

How to set up and validate locally

This file was affected due to this, running this spec should pass now WEBDRIVER_HEADLESS=false GITLAB_ADMIN_PASSWORD="XXX" GITLAB_QA_ACCESS_TOKEN=XXXX GITLAB_PASSWORD="XXXX" QA_LOG_LEVEL=DEBUG QA_GITLAB_URL=http://gdk.test:3000 bundle exec rspec ./qa/specs/features/ee/browser_ui/10_govern/security_reports_spec.rb:116

MR acceptance checklist

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