Why isn't the palm rest sensor Temperature showing up

I have been using iStat Menus to monitor the various temperature sensors, but, under the list of sensors there is no mention of palm rest left or right, I did try to find why this is happening but, couldn't find a definite answer because all the prior variants of the MacBook Pro 13 with Intel had it available & when I checked the data is also visible for the 14" & 16" MacBook Pro's with M1 Pro & Max chipsets, So if anyone has an idea to enable it or has Apple removed the sensor all together??, Please do let me know.