De-quarantine previously failing pipeline spec

What does this MR do?

De-quarantines the previously failing spec within create_and_process_pipeline_spec.rb.

This test was failing on staging initially due to improper waits. Two separate fixes were merged in an attempt to remedy

• !24518 (merged)
• !24890 (merged)

Passes:

• https://gitlab.com/gitlab-org/gitlab-qa/-/jobs/434018685#L7485
• https://gitlab.com/gitlab-org/quality/nightly/-/jobs/437074928

Closes #202149 (closed)

Does this MR meet the acceptance criteria?

Conformity

• [-] Changelog entry
• [-] Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• [-] Database guides
• [-] Separation of EE specific content