The negative net field in payroll reports has been hidden from view since it's not meant to be edited by users. This change improves the clarity of payroll reports by removing a field that should only be used internally for calculations.

The negative net field is not intended to be modified by the user, so it should not be visible in the report. This commit hides the field in the report.

task-3761771

This update improves how the testing system handles screencast recordings by preventing errors when directories don't exist after cleanup and reducing unnecessary log file sizes. These changes make the test process more reliable and efficient, particularly when tests fail and generate screencast recordings.

Fix similar to 151558

Don't fail if the screencast dir doesn't exist (after clear) Also, reduce the log size.

Forward-Port-Of: odoo/odoo#156202
Forward-Port-Of: odoo/odoo#156043