fix(ivy): QueryList not instance of exported QueryList (#27942)

Fixes Ivy's `QueryList` not being an instance of the exported ViewEnginer `QueryList`.

Also reworks `first`, `last` and `length` to be regular properties, rather than setters. Reworking `length` was required to be able to extend the ViewEngine `QueryList`, but I reworked `first` and `last` as well since getters generate a lot more code when transpiled to ES5.

These changes fix FW-706.

PR Close #27942

packages/core/src/render3/index.ts

@@ -121,7 +121,6 @@ export {
 } from './pipe';
 
 export {
-  QueryList,
   query,
   queryRefresh,
 } from './query';