[FIX] account_asset_management: Don't empty profile

Steps to reproduce the problem

- Create an asset profile with any asset account
- Don't set the asset profile in such account
- Create a vendor bill
- Add a line, and select the asset profile

Current behavior:

- The account is set, but the profile is emptied

Expected behavior:

- Both account and profile are set

This is because there's a condition on the computed writeable field
that empty the value if no asset of the account doesn't have a linked
profile, but that's not correct and different from the previous behavior
before #1336

If CacheMiss exceptions arise, the proper solution is to reassign the
value.

TT35354

account_asset_management/__manifest__.py

@@ -4,7 +4,7 @@
 
 {
     "name": "Assets Management",
-    "version": "13.0.3.7.2",
+    "version": "13.0.3.7.3",
     "license": "AGPL-3",
     "depends": ["account", "report_xlsx_helper"],
     "excludes": ["account_asset"],

account_asset_management/models/account_move.py

@@ -181,8 +181,8 @@ class AccountMoveLine(models.Model):
                 rec.asset_profile_id = rec.account_id.asset_profile_id
             elif rec.asset_id:
                 rec.asset_profile_id = rec.asset_id.profile_id
-            else:
-                rec.asset_profile_id = False
+            else:  # don't touch it - Needed for avoiding CacheMiss exceptions
+                rec.asset_profile_id = rec.asset_profile_id
 
     @api.onchange("asset_profile_id")
     def _onchange_asset_profile_id(self):