[JDK26] javac 26 updated how var declarations are stored. Fixed the problem and added a test to confirm.

test/transform/resource/before/ValUndenotable.java

@@ -0,0 +1,12 @@
+// version 14:
+import lombok.val;
+
+public class ValUndenotable {
+	public void method(int arg) {
+		val x = new Object() {
+			void foo() {
+			}
+		};
+		x.foo();
+	}
+}