[IMP] - project_event: Added domain to select only available resources.
[IMP] - project_event: Added domain to select only available resources.

ClearCorp/odoo-clearcorp,ClearCorp/odoo-clearcorp,ClearCorp/odoo-clearcorp,sysadminmatmoz/odoo-clearcorp,ClearCorp-dev/odoo-clearcorp,ClearCorp-dev/odoo-clearcorp,sysadminmatmoz/odoo-clearcorp,sysadminmatmoz/odoo-clearcorp,sysadminmatmoz/odoo-clearcorp,ClearCorp/odoo-clearcorp,ClearCorp-dev/odoo-clearcorp,ClearCorp-dev/odoo-clearcorp