bachinger 4330d6a952 Use a localized fallback message for known error codes
In the case of a legacy session app providing an error
code different to `ERROR_UNKNOWN` without an error
message, a localized fallback message is provided
instead of ignoring the error.

#cherrypick

PiperOrigin-RevId: 644704680
(cherry picked from commit 6cc6444dd9be34ea3a40d2bb296247178ee86b1d)
2024-07-02 14:11:37 +00:00
..