Remove Unnecessary lock_thread Argument - #47857

Rails 6.1 changed this method to no longer accept a catchall options object and to instead use specific keyword arguments.

This change reveals that we have been passing a keyword argument which is not actually used, so in this PR we stop passing it.

Links

• Allocation on demand in transactions rails/rails#36478

Testing story

Relying on existing unit tests to verify that this does not represent any change in functionality

PR Checklist:

• Tests provide adequate coverage
• Privacy and Security impacts have been assessed
• Code is well-commented
• New features are translatable or updates will not break translations
• Relevant documentation has been added or updated
• User impact is well-understood and desirable
• Pull Request is labeled appropriately
• Follow-up work items (including potential tech debt) are tracked and linked