Add defaultLanguageText to feedbackSurveyCompleted callback

[vegaro]

With the changes we did to the localization UI, this callback is kinda broken since the ids are auto-generated, and mean nothing to the developer.

After this PR we'll be sending the English translation of the option as well so it's easier to understand what each option represent. It requires backend changes to send the English/default language translation to the callback as well.

[vegaro]

unsure about the name of hte parameter

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