Fix member and activity count in organization find

[yeganathan18]

Changes proposed ✍️

What

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Added code to organizationRepository.ts to enable organization segment analytics. This code joins and filters two database tables to return the relevant analytics data for each segment.
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🤖 Generated by Copilot at 224b44e

findOrganizationAnalytics
Joins segments and data
A new feature for spring

Why

How

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• Join organizationSegments and analytics tables to fetch segment-wise analytics data for organizations (link)

Checklist ✅

• Label appropriately with Feature, Improvement, or Bug.
• Add screehshots 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.