Update project feature specs for the super sidebar

What does this MR do and why?

Update project feature specs for the super sidebar

Updates some project-related feature specs to pass with the super sidebar enabled.

Screenshots or screen recordings

No visual change.

How to set up and validate locally

bundle exec rspec ee/spec/features/groups/user_interacts_with_unlimited_members_during_trial_alert_spec.rb
bundle exec rspec ee/spec/features/projects/requirements_management/requirements_list_spec.rb
bundle exec rspec ee/spec/features/projects/user_interacts_with_unlimited_members_during_trial_alert_spec.rb
bundle exec rspec ee/spec/features/projects/work_items/okr_spec.rb
bundle exec rspec spec/features/projects/work_items/work_item_spec.rb

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.