I've just put the indonesian rom on my poco x6 pro, and it works for recording call with google dialer,
I could first unlock the bootloader by installing the last mi community apk (xxxx.32) choosing global community at startup of the app, and then I had the unlock BL option in my profile. The last 2022 mi flash tool reports error on my PC (didn't find the /log ...), so I used the 2020 version, and it works, at the end of flash process, after 380 seconds, (option clean all) it reports an error (because it checks a file at the end that is not present in the program directory, I saw after that an option to delete the instruction in mi flash config), but the flash process is OK in fact and the phone seems ok. I booted the phone and configured indonesia for the region (to avoid any region limitation issue, don't know if it's a deal) and my language (french), and checked to record call automatically and without notif.
I was struggling with xiaomi for 4 months to unlock my mi 11 lite 5g (mi unlock error "this device is not activated"), after about hundred messages with them, no help at all! So after making many tricks, my mi 11 lite is with a indian rom, but was bought with a global one (but the imei seems indian), and as I put it without unlock, it's totally unstable for call, I don't manage to put the global rom again...So xiaomi is really going the bad way imho, it's a shame to refuse unlocking bootloader...