[lib][native] Pass CSAT to Reports endpoint

Summary:
Final part of ENG-6289.
Passed AuthMetadata to sendReports() calls if possible.

Depends on D10930

Test Plan:

• Sent multimedia messages - checked Reports service - reports had user ID set
• Triggered a crash with CSAT unset - user ID was unknown in generated report
• Sent a message with CSAT set - user ID was set in generated report

Reviewers: tomek, michal, varun

Reviewed By: tomek

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D10931