The 11-42 has horrible big jumps as it is,
Well it has one gappy(ish) jump at the bottom but it’s not that bad even the Shimano XT 11speed 46 goes from 37 to 46 at the top end, If they’ve just gone from 36-42 to 37-46 it won’t be any worse.
SunRace 10 speed 11-42
11-13-15-18-21-24-28-32-36-42
Assuming the 10 speed 11-46 would go
11-13-15-18-21-24-28-32-37-46?
Compare to the 11speed options it’s not really any worse or different except on one jump.
Sunrace 11speed 11-46
11-13-15-18-21-24-28-32-36-40-46
Shimano 11speed 11-46
11-13-15-17-19-21-24-28-32-37-46
Could you even get a 10 spd mech to work with a sprocket so large?
Fortunately Shimano 11 speed mechs work fine with their 10 speed shifters, so an SLX M7000 or XT M8000 does the job just fine.