[PATCH] Backport PR #21451: Fix interface language auto-configurationDescription: Commit 7d99df57dc977ee00d92c959102409be1683df24 This bug prevented auto-configuration of the interface language when Spyder is started for the first time. (After that, the interface language is stored in the preferences file and can be changed via the preferences dialog.) A minor cosmetic fix to the function documentation has been removed from this patch.