[FIX] stock: ambiguous product_id in init query

During the upgrade of some databases to 13.0, the following traceback
was reported:

`psycopg2.errors.AmbiguousColumn: column reference "product_id" is ambiguous`

This commit fixes this issue by prefixing product_id with the table name alias 'm'.

closes odoo/odoo#49927

X-original-commit: 0e3c5d3ee1726db2641cd683a84fe59e867d4319
Signed-off-by: Simon Lejeune (sle) <sle@openerp.com>

addons/stock/report/report_stock_quantity.py

@@ -28,12 +28,12 @@ class ReportStockQuantity(models.Model):
 CREATE or REPLACE VIEW report_stock_quantity AS (
 SELECT
     m.id,
-    product_id,
+    m.product_id,
     CASE
         WHEN (whs.id IS NOT NULL AND whd.id IS NULL) OR ls.usage = 'transit' THEN 'out'
         WHEN (whs.id IS NULL AND whd.id IS NOT NULL) OR ld.usage = 'transit' THEN 'in'
     END AS state,
-    date_expected::date AS date,
+    m.date_expected::date AS date,
     CASE
         WHEN (whs.id IS NOT NULL AND whd.id IS NULL) OR ls.usage = 'transit' THEN -product_qty
         WHEN (whs.id IS NULL AND whd.id IS NOT NULL) OR ld.usage = 'transit' THEN product_qty
@@ -60,10 +60,10 @@ WHERE
 UNION
 SELECT
     -q.id as id,
-    product_id,
+    q.product_id,
     'forecast' as state,
     date.*::date,
-    quantity as product_qty,
+    q.quantity as product_qty,
     q.company_id,
     wh.id as warehouse_id
 FROM
@@ -78,16 +78,16 @@ WHERE
 UNION
 SELECT
     m.id,
-    product_id,
+    m.product_id,
     'forecast' as state,
     GENERATE_SERIES(
     CASE
         WHEN m.state = 'done' THEN (now() at time zone 'utc')::date - interval '3month'
-        ELSE date_expected::date
+        ELSE m.date_expected::date
     END,
     CASE
         WHEN m.state != 'done' THEN (now() at time zone 'utc')::date + interval '3 month'
-        ELSE date::date - interval '1 day'
+        ELSE m.date::date - interval '1 day'
     END, '1 day'::interval)::date date,
     CASE
         WHEN ((whs.id IS NOT NULL AND whd.id IS NULL) OR ls.usage = 'transit') AND m.state = 'done' THEN product_qty