The test verifying the values of the sale report in a multi-comp & multi-curr
environment relies on the fact that the main company is by default in USD.
Nevertheless, the test fails when a localization is installed (if it changes
the currency of the main company).
This commit makes sure the tests always works, and resurrects the right tool
for that, which was dropped in commit 3752b3166e.
Cf runbot build error 22351
closesodoo/odoo#130201
X-original-commit: a73b5fce4fb02eefc681c55eab8f57cd35105226
Signed-off-by: Victor Feyens (vfe) <vfe@odoo.com>