Fix flaky spec depending on generated title

What does this MR do and why?

We use a fixed title here so our assertions don't fail depending on the generated title

How to set up and validate locally

Run:

rspec './spec/policies/project_policy_spec.rb[1:34:1:3:3]' './spec/services/work_items/task_list_reference_removal_service_spec.rb[1:1:1:1:2,1:1:2:1:2]'

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.

Related to #368208 (closed)