chore(reuse): add missing BSD-3-Clause.txt license

[cristianscheid]

• Resolves: #

Summary

• adds missing BSD-3-Clause.txt license to stable32, as currently is only available on stable33 and stable34
• avoids following CI error:

REUSE Compliance Check / reuse-compliance-check

# MISSING LICENSES

'BSD-3-Clause' found in:
* js/teams-dashboard.mjs
* js/teams-dashboard.mjs.map

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)
• Labels added where applicable (ex: bug/enhancement, 3. to review, feature component)
• Milestone added for target branch/version (ex: 32.x for stable32)

AI (if applicable)

• The content of this PR was partly or fully generated using AI