Resolve "BitBucket Server import using name instead of key"

What does this MR do?

Original issue: #230741 (closed)

This MR fixes incorrect generation of id for importing bitbucket server repo

Originally project_name was used instead of project_key

Screenshots

N/A

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

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• [-] Tested in all supported browsers
• [-] Informed Infrastructure department of a default or new setting change, if applicable per definition of done