Resolved! Will the STUSB4500 assert (pull low) the ATTACH pin if it is connected to a USB 2.0 port? For example in the case a USB 2.0-A to USB-C cable is used where there is no host USB PD communication on the CC pins and only 5V appears on VBUS.
Also, will the VBUS_EN_SNK pin get asserted (pulled low) in this case, allowing the power path to enable 5V from the USB 2.0 cable to power the device?