Preferences tab is broken in non-en-US 6.5a4(-hardened) builds

We have reports that in non-en-US builds the preferences tab is not opening anymore with an XML parsing error:

"XML-Verarbeitungsfehler: Nicht definierte Entität
Adresse: about:preferences
Zeile Nr. 653, Spalte 7: ------^"

Something like XML processing error: Undefined entity adress: about:preferences row 653 column 7.

https://blog.torproject.org/blog/tor-browser-65a4-released#comment-219453 and https://blog.torproject.org/blog/tor-browser-65a4-hardened-released#comment-219407.

This is very likely due to #20244 (moved).

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