Result of Context.getExpectedType() depends on prev Context.typeof() calls.

If macro function receives non primitive args, `getExpectedType()` returns null after `Context.typeof()` call.
Reproduces on all the nightlies but works fine on 4.3.6.
```haxe
class Macro {
public static macro function create2(extra:Array) {
trace( Context.getExpectedType()); //TType(Map,[TInst(String,[]),TAbstract(Int,[])])
var valCt0 = Context.typeof(extra[0]);
trace( Context.getExpectedType()); // null
return macro null;
}
}
class Test {
static function main() {
var avec2:Map = Macro.create2(new haxe.ds.Vector(1)); // arguments of primitive types does'n break results
}
}
```
https://try.haxe.org/#70A7a3b4

Start with the Context.getExpectedType() and Context.typeof() macro API entry points, then run the linked Try Haxe reproduction against the affected nightlies and 4.3.6. Done means getExpectedType() continues to return the expected Map type after typeof() is called on a non-primitive argument.

Written by the indexing model from the issue text.