inside the vendor folder there are lib and lib64 folders .. I think if we can use the library file (Aosp Rom), we can use it to replace the one in the EU rom (but unfortunately I don't know the library file related to touch screen) .. .
Have you ever tried reinstalling fastboot rom via mi flash tool?
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https://forum.xda-developers.com/redmi-note-8/help/redmi-note-8-firehose-authentication-t4031513