[AI-FSSDK] [TESTING] do not review

[jaeopt]

Summary

Skip ODP identify event dispatch when only a single identifier is provided (e.g., just fs_user_id). Send ODP identify event only when 2+ valid (non-null, non-empty) identifiers exist, and propagate identifiers as a dict through the full identify call chain instead of a plain user_id string.

Changes

• Skip ODP identify event when fewer than 2 valid identifiers are present
• Change identify_user call chain to accept and forward an identifiers dict instead of a single user_id string
• Filter out null and empty identifier values before counting
• Update tests to reflect dict-based identifier propagation

Jira Ticket

FSSDK-12721