It's a physical handle? Not a pull string like is shown in the manual? That isn't standard on any 2019 Tesla in Europe.

2019:

https://teslamotorsclub.com/tmc/threads/?model-3-rear-door-no-unpowered-emergency-release-safety.179083/

2023:

"The new owner's manual for the Europe-bound Model 3 shows that the rear doors are now fitted with an easily accessible manual door release. This is placed at the bottom of the door pocket, under a plastic cover that can be easily removed to access the mechanical release cable. "

https://www.autoevolution.com/news/tesla-model-3-highland-has-easily-accessible-emergency-releases-even-for-rear-doors-220756.html