Helpdesk ticket discussions now avoid showing irrelevant information in the chatter. This reduces confusion for users reviewing ticket history and keeps customer support communication clearer.

Backport of https://github.com/odoo/enterprise/commit/d9b06557baf692f707ff8b75106df6b67c6bc523
opw-3941552

This update adjusts an internal performance test threshold for Australian payroll accounting after repeated build failures. It helps keep automated validation reliable without changing payroll features or user workflows.

Before this commit, a queryCount was set at 3453 queries and was failing on multiple builds. This PR bump that count.