cubicweb #14010345 setting lc_messages on postgres requires superuser rights [validation pending]

From b288debc6736, we set posgres LC_MESSAGES variable to C on connection. But setting this requires superuser rights. When this is not the case (quite usual), the connection is not possible.

Ref.: https://www.postgresql.org/docs/current/static/runtime-config-client.html#GUC-LC-MESSAGES

priorityimportant
typebug
done in3.23.1
load left0.000
closed by#dcfc446d8eae Backed out changeset b288debc6736
patchBacked out changeset b288debc6736 [applied]