Resolves Issue #1840: Fix user dual-write normalization

[afoote-mitre]

Closes Issue #1840

Summary

Fixes user dual-write creation so legacy dotted-key payloads are normalized before syncing data into the Registry user collection.

Important Changes

src/repositories/baseUserRepository.js

• Converts legacy create payloads from the saved User document instead of the raw request body.
• Preserves admin role detection from role and authority.active_roles.

test/integration-tests/org/postOrgUsersTest.js

• Added regression coverage for "name.first" dotted-key legacy payloads syncing into BaseUser.
• Added coverage for registry user creation with authority.active_roles: ["Admin"].

test/integration-tests/review-object/reviewObjectTest.js

• Added diagnostic assertion output for review-history conversation setup failures.

Testing

Steps to manually test updated functionality, if possible

• 1) Run bash -i -c "npm run test:integration".
• 2) Create a legacy user with "name.first" and verify both User and BaseUser contain name.first.
• 3) Create a registry user with authority.active_roles: ["Admin"] and verify the user UUID is in the org admins list.