De-duplicate the entries in the marketplace

[bmo-at-a9s]

Description

During the introduction of searchable tags and names, a slight mistake slipped in that duplicated entries in the marketplace and made search such that both the results of a tag search as well as a name search would show up. This is no longer the case with this patch.

Motivation and Context

We were asked by a customer to fix this, but no open issue exists.

How Has This Been Tested?

There are unit tests to test this functionality already. We also have a staging deployment to verify this is fixed.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• Docs update
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have followed the guidelines in CONTRIBUTING.md, including the required formatting of the commit message

[norman-abramovitz]

Thank you for the contribution @bmo-at-a9s! 🙏

We actually landed a fix for the marketplace duplicate entries issue on our working branch feature/Angular-21 in commit 649ba07b86 (Wayne Seguin, 2025-10-30 — "Fix frontend UI issues: duplicate services, icon sizing, and filter layouts"). That commit takes a different approach than this PR:

• This PR: chains the filters so items must match BOTH label AND tags (intersection)
• 649ba07b86: runs both filters independently then de-duplicates via a Map<metadata.guid, entity>, preserving items that match EITHER label OR tags (union + dedupe)

We went with the union-dedupe approach because the intersection would hide services that match the search term in the name but not in the tags (or vice versa) — e.g. searching "redis" would drop redis-cloud if its tags array doesn't also contain redis.

Closing this PR since the underlying bug is resolved with a broader fix. Happy to reconsider if you think there's a scenario our approach still misses!