[FIX] util/models: Fix compute for renamed model

if model got renamed during migration but related field of model
compute didn't update due to that below traceback raised
for fixing it replaced with according this [patch]
(https://github.com/odoo/upgrade-util/blob/4230096526739591d15eb54652dc835ec8b3e3cc/src/util/models.py#L491)

```
'fleet.fleet_vehicle_menu', 521, 'Fleet > Fleet > Fleet', 726):
 Traceback (most recent call last):
   File "/home/odoo/src/odoo/18.0/odoo/tools/safe_eval.py", line 397, in safe_eval
    return unsafe_eval(c, globals_dict, locals_dict)
   File "", line 2, in <module>
   File "/home/odoo/src/odoo/18.0/odoo/api.py", line 596, in __getitem__
    return self.registry[model_name](self, (), ())
   File "/home/odoo/src/odoo/18.0/odoo/modules/registry.py", line 240, in __getitem__
    return self.models[model_name]
 KeyError: 'stock.production.lot'
```

UPG-2588678
OPW-4592615

closes #225

Signed-off-by: Christophe Simonis (chs) <[email protected]>

Author: sagu-odoo

src/util/models.py

@@ -250,6 +250,24 @@ def remove_model(cr, model, drop_table=True, ignore_m2m=()):
 delete_model = remove_model
 
 
+def _replace_model_in_computed_custom_fields(cr, source, target):
+    # adapt computes of manual fields
+    if column_exists(cr, "ir_model_fields", "compute"):
+        cr.execute(
+            r"""
+                UPDATE ir_model_fields
+                   SET compute = regexp_replace(compute, %s, %s, 'g')
+                 WHERE state = 'manual'
+                   AND compute IS NOT NULL
+                   AND name LIKE 'x\_%%'
+                """,
+            [
+                r"""\yenv\[('|"){}\1\]""".format(re.escape(source)),
+                "env['{}']".format(target),
+            ],
+        )
+
+
 def rename_model(cr, old, new, rename_table=True):
     """
     Rename a model.
@@ -375,6 +393,8 @@ def rename_model(cr, old, new, rename_table=True):
     """.format(col_prefix=col_prefix, old=old.replace(".", r"\."), new=new)
     )
 
+    _replace_model_in_computed_custom_fields(cr, old, new)
+
 
 def merge_model(cr, source, target, drop_table=True, fields_mapping=None, ignore_m2m=()):
     """
@@ -487,21 +507,7 @@ def merge_model(cr, source, target, drop_table=True, fields_mapping=None, ignore
             else:
                 cr.execute(fmt_query)
 
-    # adapt computes of manual fields
-    if column_exists(cr, "ir_model_fields", "compute"):
-        cr.execute(
-            r"""
-            UPDATE ir_model_fields
-               SET compute = regexp_replace(compute, %s, %s, 'g')
-             WHERE state = 'manual'
-               AND compute IS NOT NULL
-               AND name LIKE 'x\_%%'
-            """,
-            [
-                r"""\yenv\[('|"){}\1\]""".format(re.escape(source)),
-                "env['{}']".format(target),
-            ],
-        )
+    _replace_model_in_computed_custom_fields(cr, source, target)
 
     # Adapt translations
     if table_exists(cr, "ir_translation"):