Obsolete name field updated to displayName when getting most active organizations

[epipav]

Changes proposed ✍️

What

🤖 Generated by Copilot at 65354d3

Updated the analytics query to use the displayName column for the organization name in the weekly emails. This reflects the new schema of the organizations table and improves the readability of the emails.
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🤖 Generated by Copilot at 65354d3

displayName used
Query aligns with schema
Winter emails change

Why

How

🤖 Generated by Copilot at 65354d3

• Use displayName instead of name column from organizations table in analytics query (link)

Checklist ✅

• Label appropriately with Feature, Improvement, or Bug.
• Add screenshots to the PR description for relevant FE changes
• New backend functionality has been unit-tested.
• API documentation has been updated (if necessary) (see docs on API documentation).
• Quality standards are met.