[lib] Use tUserID in entry-validators.js pt.3 - serverCreateUpdatesResponseValidator

Summary: issue: ENG-7819

Test Plan:
flow
Tested that update_entry endpoint, which uses saveEntryResponseValidator work correctly and doesn't throw errors

Reviewers: tomek, kamil, bartek

Reviewed By: tomek

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D11963