Before this commit, doing expression.OR() with only FALSE_LEAF would
yield [] which is equivalent to TRUE_LEAF and is therefore not correct.
The same happened (to a lesser extent) with expression.AND() within an
expression.OR(), since the former would return a [] which would be
ignored by expression.OR().
See tests for a clearer view of the use cases.
Fixes#30113, #26540closesodoo/odoo#31202
Since the revision
5e3de76f36
The `::text` is included within the `unaccent` call
The expession tests have never been changed according
to this change of behavior in the building of the unaccented
queries. This has never been detected by runbot because
you need to start the Odoo server with the option
`--unaccent`
and to create the database with the unaccent extension
`CREATE EXTENSION unaccent`
to be able to fail the former tests,
and this is not the case on runbot.
Adrian Torres