[FIX] stock: correctly compare inventory adjustements difference

The filter 'Difference different than zero' is not correct

Steps to reproduce:
1. Install the Inventory app
2. Go to Inventory -> Operations -> Inventory Adjustments
3. Create a new Inventory Adjustments and start it
4. Change the number of Drawer counted so that the absolute difference is <= 0,498
5. Apply the filter 'Difference different than zero'
6. The line disappears although the difference is not null

Solution:
Specify the argument name 'precision_rounding' for the function 'float_is_zero()'

OPW-2699771

closes odoo/odoo#81808

X-original-commit: d60c3ed6
Signed-off-by: Nicolas Lempereur (nle) <nle@odoo.com>
Signed-off-by: Guillaume Merlin (megu) <megu@odoo.com>