But my suggestion breaks the sentence with some cue, so replacing the RLM and LRM with <RLM> or <LRM> will show the user that there were some additional characters and now the text is rendered without them yet informing that it might break the experience and that there’s an option to replace back manually if needed, removing the characters completely without some indicators gives no room for educated decisions.
And it will also prevent trojan source code as you mentioned because the user will be able to see the malicious code with the indicators.
I will try to get some screenshots from Pootle, I don’t remember seeing that raw strings option in the past couple of years, it was very useful when we started fixing the LibreOffice localization.