feat: add superclass call support inside closures in wren compiler

Add a new test case `test/super/closure.wren` verifying that `super.toString` correctly resolves to the base class method when called from within a closure defined in a derived class. Refactor `resolveLocal` and `resolveUpvalue` to accept explicit name and length parameters instead of relying on the previously consumed token, enabling proper name resolution in nested closure scopes during superclass method dispatch.

test/super/closure.wren

@@ -0,0 +1,16 @@
+class Base {
+  toString { return "Base" }
+}
+
+class Derived is Base {
+  getClosure {
+    return fn {
+      return super.toString
+    }
+  }
+
+  toString { return "Derived" }
+}
+
+var closure = (new Derived).getClosure
+IO.write(closure.call) // expect: Base