Add Jira issue import e2e spec

What does this MR do?

Adds an e2e test for Jira issue import.

Closes gitlab-org/quality/testcases#823 (closed)

Update - Caught two bugs after a rebase:

• !33688 (merged)
• #220232 (closed)

Update 2: Both bugs have been fixed. Reopening for review.

Screenshots

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