Fix the rest of the spread syntax errors

[chenglou]

Thanks to #1925, we now have pretty good wrong list spread errors. These are still remaining:

• list spread pattern
• record spread {a, ...r}
• record spread pattern {a, ...r}
• array spread
• array spread pattern

As an aside, I'm convinced that #1925's way of fixing it is right (cc @cristianoc @IwanKaramazow). Because if we ever need to support those currently unsupported spread patterns, it'll be easy to unlock that. Simpler code for current maintenance too, so win-win.

[IwanKaramazow]

I'll take care of it.