Zink doesn't work

If Zink worked for you before the foxglove update, this might get it running on your device. It doesn't help on devices which don't fulfill the base Zink requirements.

**/storage/emulated/0/Android/data/net.kdt.pojavlaunch/files/custom_env.txt** 
(if this file does not exist, create it)

MESA_GL_VERSION_OVERRIDE=4.6
MESA_GLSL_VERSION_OVERRIDE=460