[IMP] inventory: multiple qty def fix

[Felicious]

18.0: Adjust logic of Multiple field in reordering rules to prevent overstocking by ensuring replenishment quantities never exceed the defined maximum

Changelog

• Odoo now selects the largest multiple that does not exceed the Max quantity.
  • Previously in v17, Odoo selected the multiple that exceeded the maximum.
• The Multiple field remains a numeric value, representing a fixed quantity multiple.
• In the v19, the system will go back to selecting the multiple that exceeds the max.

Example

If the Multiple = 3 and Max = 20, Odoo orders 18 units — the highest multiple of three that stays below or equal to the maximum.

[robodoo]