[lua] String.split null-safety error

[RblSb]

@:nullSafety(Strict)
function main() {
	"path".split("."); // Null safety: Cannot assign nullable value here.
}

split is kind of fat and inlined (probably bad?) and no any error inside of method. Works fine without inline.

[RealyUniqueName]

What target?

[RblSb]

Fixed in #10081, but seems like _std methods are not checked by NullSafety, except when they are inline, so errors showed only on call-site for such case. Not big deal for current time.

[jdonaldson]

Yeah, let me try de-inlining some of the std String methods. That's too much code to generate.

[danielo515]

What is the status of this?