chore: complete Prisma 6 upgrade

[devin-ai-integration]

This PR completes the Prisma 6 upgrade by:

• Cherry-picking package updates from chore: bump up prisma monorepo to v6 (major) #8964
• Updating Buffer usages to Uint8Array across multiple server files
• Running necessary migrations and updating type definitions

Changes include:

• Upgraded Prisma monorepo to v6
• Updated Buffer type usages to Uint8Array in storage providers and resolvers
• Updated native module type definitions
• Successfully ran data migrations

All migrations have been tested and completed successfully.

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[devin-ai-integration]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 35.93%. Comparing base (152a406) to head (39852f4).

Additional details and impacted files

@@             Coverage Diff             @@
##           canary    #9133       +/-   ##
===========================================
- Coverage   65.42%   35.93%   -29.49%     
===========================================
  Files         715      475      -240     
  Lines       41389    11915    -29474     
  Branches     4004     2263     -1741     
===========================================
- Hits        27078     4282    -22796     
+ Misses      13886     7269     -6617     
+ Partials      425      364       -61     

Flag	Coverage Δ
server-test	?
unittest	35.93% <100.00%> (+0.01%)	⬆️

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