How much the hFE value decrease at -40C
This is typical  relationship for a BJT , the lowly but still great PN2222A that costs less than a  penny.




added

The temperature coefficient for Beta is called NTB and is given only in SPICE files by OEM

In every case I have seen so far including your device, it is a positive temp coefficient. Although @jonk has more data on this, I have yet to see evidence to the contrary.

For more details https://www.allaboutcircuits.com/textbook/semiconductors/chpt-4/bjt-quirks/