This is configurable. I use it in my android fork that I use for creative writing, `write-xl` (in case you're interested, here: https://github.com/adamharrison/write-xl ; not really ready for public consumption). You can set the word wrapping configuration via your user plugin by doing:
If you want a bit better discoverability; you may want to try the `addons` release; it comes with a settings plugin that lays out all the settings in GUI so you don't have to go through digging through the source. Could be helpful if you just wanna poke around.
config.plugins.linewrapping.mode = "word"
The full list of options is here: https://github.com/lite-xl/lite-xl/blob/master/data/plugins/...