[FIX] mrp: kits and PO based on reordering rules

If a product is a kit and has a storable component, if this component is
already ordered (with sufficient quantity), when running the scheduler,
the ordered quantity of this component will still be increased.

To reproduce the error:
1. Create two products P_kit and P_compo
	- Both are storable products
	- P_compo must have at least one vendor
2. Create a BoM for P_kit:
	- Must be a kit
	- Add P_compo to components
3. Set a reordering rule for P_kit
4. Inventory > Operations > Run Scheduler
5. Go to Purchase and find the generated RfQ
	- The ordered quantity is correct
6. Repeat 4-5

Error: This time, the ordered quantity is incorrect. While you don't
have any P_kit on hand, each time the scheduler is run, the ordered
quantity will increase.

A similar issue has already been fixed: #63891. The original commit
targets the version 13, but the fix has also been applied to v14 (#64277).
However, here the case is slightly different: the user run the scheduler
twice while the first RfQ is not yet confirmed and received. In such a
case, the scheduler must also check the "quantity in progress". In version
14, it seems nothing computes this quantity for the kits.

OPW-2421841

closes odoo/odoo#64699

Signed-off-by: Adrien Widart <adwid@users.noreply.github.com>

addons/mrp/models/stock_orderpoint.py

@@ -2,6 +2,7 @@
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
 from odoo import _, api, fields, models
+from odoo.tools.float_utils import float_is_zero
 
 
 class StockWarehouseOrderpoint(models.Model):
@@ -42,6 +43,38 @@ class StockWarehouseOrderpoint(models.Model):
         for orderpoint in self:
             orderpoint.show_bom = orderpoint.route_id.id in manufacture_route
 
+    def _quantity_in_progress(self):
+        bom_kit_orderpoints = {
+            orderpoint: bom
+            for orderpoint in self
+            for bom in self.env['mrp.bom']._bom_find(product=orderpoint.product_id, bom_type='phantom')
+            if bom
+        }
+        res = super(StockWarehouseOrderpoint, self.filtered(lambda p: p not in bom_kit_orderpoints))._quantity_in_progress()
+        for orderpoint in bom_kit_orderpoints:
+            boms, bom_sub_lines = bom_kit_orderpoints[orderpoint].explode(orderpoint.product_id, 1)
+            ratios_qty_available = []
+            # total = qty_available + in_progress
+            ratios_total = []
+            for bom_line, bom_line_data in bom_sub_lines:
+                component = bom_line.product_id
+                if component.type != 'product' or float_is_zero(bom_line_data['qty'], precision_rounding=bom_line.product_uom_id.rounding):
+                    continue
+                uom_qty_per_kit = bom_line_data['qty'] / bom_line_data['original_qty']
+                qty_per_kit = bom_line.product_uom_id._compute_quantity(uom_qty_per_kit, bom_line.product_id.uom_id, raise_if_failure=False)
+                if not qty_per_kit:
+                    continue
+                qty_by_product_location, dummy = component._get_quantity_in_progress(orderpoint.location_id.ids)
+                qty_in_progress = qty_by_product_location.get((component.id, orderpoint.location_id.id), 0.0)
+                qty_available = component.qty_available / qty_per_kit
+                ratios_qty_available.append(qty_available)
+                ratios_total.append(qty_available + (qty_in_progress / qty_per_kit))
+            # For a kit, the quantity in progress is :
+            #  (the quantity if we have received all in-progress components) - (the quantity using only available components)
+            product_qty = min(ratios_total or [0]) - min(ratios_qty_available or [0])
+            res[orderpoint.id] = orderpoint.product_id.uom_id._compute_quantity(product_qty, orderpoint.product_uom, round=False)
+        return res
+
     def _set_default_route_id(self):
         route_id = self.env['stock.rule'].search([
             ('action', '=', 'manufacture')