Timesheet screens now make it easier to link and review work logged against helpdesk tickets. Users get clearer views, filters, and a new ticket-based timesheet report when helpdesk teams use timesheets, helping managers track support effort more easily.

The purpose of the commit is to improve the UX and usability timesheet.

So in this commit improve the list view, filters, form views, and some feature
usability.

Add helpdesk ticket field in timesheet views.

Add 'timesheets by ticket' report
    - should only be visible if the 'timesheets' feature is enabled on at least one
    helpdesk team
    - timesheet manager will be able to see.

task-2729677

Co-authored-by: Nidhi Patel <nia@odoo.com>

Spreadsheet formulas that connect to Odoo data have been renamed with an Odoo prefix so they are easier to recognize and distinguish. Existing spreadsheets are migrated automatically, helping preserve current work while improving clarity for future use.