[Bug]: No checking for static function accessing instance variables

### Describe the bug

I don't get red squiggles when accessing instance variables from static functions. It's always the build process that catches these errors.

```
var int variable;

static Function Test()
{
	Default.variable++; // this should work
	variable++;			// this shouldn't but no error
}
```

### Screenshots

Trust me, that's how it is.