[FIX] account: install a chart of account on another company

1. Create odoo instance with "--without-demo=ALL" option.
2. Install Accounting module.
3. Add Chart of Accounts manually (e.g. code 111111 Bank and Cash and 222222 Other Income)
4. Create Journal.
5. Create Journal Entries.
6. Activate multi-company.
7. Set new company to current user and set the new company as current company.
8. Install accounting localization: Accounting >> Configuration >> Settings >> Install More Packages >> (install any localization module)

Before this commit, there was an error because when installing any module,
the environment in which it happens is in uid = 1 and doesn't have a context anymore
Thus, when arriving in the charts of accounts code, the env's user is still 1
Which doesn't mean anything in V12, since it is the system user

After this commit, the user is retrieved from the request

OPW 1911677

closes odoo/odoo#29310

addons/account/models/chart_template.py

@@ -5,6 +5,7 @@ from odoo import api, fields, models, _
 from odoo import SUPERUSER_ID
 from odoo.exceptions import UserError
 from odoo.tools import pycompat
+from odoo.http import request
 
 import logging
 
@@ -164,7 +165,13 @@ class AccountChartTemplate(models.Model):
         of accounts had been created for it yet.
         """
         self.ensure_one()
-        company = self.env.user.company_id
+        if request:
+            company_id = request.env.user.company_id.id
+            company = self.env['res.company'].browse(company_id)
+        else:
+            # fallback to company of current user, most likely __system__
+            # (won't work well for multi-company)
+            company = self.env.user.company_id
         # If we don't have any chart of account on this company, install this chart of account
         if not company.chart_template_id:
             self.load_for_current_company(15.0, 15.0)
@@ -178,7 +185,13 @@ class AccountChartTemplate(models.Model):
         rights.
         """
         self.ensure_one()
-        company = self.env.user.company_id
+        if request:
+            company_id = request.env.user.company_id.id
+            company = self.env['res.company'].browse(company_id)
+        else:
+            # fallback to company of current user, most likely __system__
+            # (won't work well for multi-company)
+            company = self.env.user.company_id
         # Ensure everything is translated to the company's language, not the user's one.
         self = self.with_context(lang=company.partner_id.lang)
         if not self.env.user._is_admin():