[FIX] tests: ensure that previous user is logged off in authenticate
[FIX] tests: ensure that previous user is logged off in authenticate

In some case, a browser_js test with login "None" following a browser_js
test with a defined login could result in the second test being executed
with the previous user.

This was caused by a race condition, a request response comming back
to chrome just after browser clear, restoring the old cookie.
(All odoo request have the set_cookie flag set in order to refresh
cookie timeout)

The solution here is to check one more time for cookie in authenticate,
but also to remove HTTPCase session from session_store. This will
only be effective when calling browser_js without login in the same
HTTPCase .

closes odoo/odoo#39525

X-original-commit: 218db53b9da1573dc18610678de3b7f763531c60
Signed-off-by: Xavier Dollé (xdo) <a1a56fd5af677733fcc9fce69c49c5e66d550efa@odoo.com>

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