[14.0][IMP] hr_timesheet_sheet: Improve search speed for can_review field

[lpolitanski-tempoconsulting]

This is a followup to #581 taking into account the feedback by @len-foss
Remedies slowdowns in search speed when there are lots of timesheets by avoiding expensive call to

self.search([]).filtered(
            lambda sheet: check(sheet._get_possible_reviewers())
        )

and not passing a domain that checks for exclusion/inclusion against lots of timesheet ids.

[len-foss]

LGTM

I think an improvement would be to use osv.expression to use AND and OR rather than + ["&"] to extend the domains, to be more robust in case of module overrides.