Replace default values of props using global variables with computed case

[cnotv]

Summary

Fixes #10829

As mentioned in the issue, this is a safe migration to Vue3 with limited use cases.
Using computed values based on props using i18n default values should be sufficient to not break anywhere.

A first attempt to use the global variable t has been carried out, unfortunately, it's not exposed in a prop scope and cannot be used.

Finally, as you can see by the commits and logs, it's mandatory to set a default empty value regardless, to not break existing logic.

Occurred changes and/or fixed issues

Technical notes summary

Areas or cases that should be tested

Areas which could experience regressions

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