[FIX] account: avoid crash when request not bound to database

- When installing account using a request (e.g. http route auth set to `None`) not bound to a database,
  the installation fails.

  To avoid this, we check if the request we are using is bound to a
  database, if not, the fallback code is executed.

addons/account/models/chart_template.py

@@ -165,7 +165,7 @@ class AccountChartTemplate(models.Model):
         of accounts had been created for it yet.
         """
         self.ensure_one()
-        if request:
+        if request and request.db:
             company_id = request.env.user.company_id.id
             company = self.env['res.company'].browse(company_id)
         else:
@@ -185,7 +185,7 @@ class AccountChartTemplate(models.Model):
         rights.
         """
         self.ensure_one()
-        if request:
+        if request and request.db:
             company_id = request.env.user.company_id.id
             company = self.env['res.company'].browse(company_id)
         else: