[FIX] mrp: compute state thanks to float_compare

In some cases, due to rounding errors, the state of a MO is incorrect

OPW-2753598

closes odoo/odoo#88530

X-original-commit: 976eee1d
Signed-off-by: Arnold Moyaux <arm@odoo.com>
Signed-off-by: Adrien Widart <awt@odoo.com>