modemmanager: Fix SIM7100E crash

[floion]

With the update to MM 1.22.0 we have received reports that SIM7100E is not functioning correctly.
Followed up with ModemManager devs and it was discovered the issue is related to a PCO setting:
https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/issues/884

Change-type: patch

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