[FIX] web_editor: fix non-deterministic tests
[FIX] web_editor: fix non-deterministic tests

Those tests were skipped because they were failing
non-deterministically.

This commit aims to make them deterministic by putting back some
guard promises that were lost during the jquery update adaptation.

This commit also fixes a lingering issue with one of the asserts.
We observed that sometimes, the "alt" and "title" attributes where
both present on the element but displayed in different order in
the string returned by wysiwyg.getValue(). This is because there
is no set order in the attribute returned by jQuery.html().
Because of that, I replaced the simple sring test by a thorough
manual comparison of the result that is expected to be equivalent.

closes odoo/odoo#31671

Signed-off-by: Aaron Bohy (aab) <40b904fd8852297daeaeb426b1bca46fd2454aa3@odoo.com>
ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo