[FIX] hr_timesheet: fix searching on is_project_overtime field

Before this commit Projects in overtime filter does not return
project as expected after project has allocated hours to set
on then.

This commit fixes by taking allocated hours into account to
search for project that are in over time.

task-3000817

closes odoo/odoo#106428

X-original-commit: a6d652a85a428a28d3d6eab25e591c08809c2a34
Signed-off-by: Laurent Stukkens (ltu) <ltu@odoo.com>