Add typing to support readonly array properties of AST Node (#15127)

* Add typing to support `readonly` array properties of AST Node

* add changelog

* fix changelog

* add test case

tests/dts/unit/cases/print.ts

@@ -12,6 +12,7 @@ interface Nested2 {
   kind: "2";
   item3: Nested3;
   list3: Nested3[];
+  list5: readonly Nested3[];
 }
 interface Nested3 {
   kind: "3";
@@ -155,5 +156,7 @@ function print(
   // @ts-expect-error
   path.map(print, "item2", "item3");
 
+  path.map(print, "item2", "list5");
+
   return "";
 }