[#4070] Fix SuperBuilder for non-ASCII superclass simple names

javac pretty-prints JCIdent via toString() using unicode escapes.
Use the identifier Name so Hangul (and other non-ASCII) superclass
simple names generate a valid builder type reference.

test/transform/resource/before/SuperBuilderNonAscii.java

@@ -0,0 +1,15 @@
+public class SuperBuilderNonAscii {
+	@lombok.SuperBuilder
+	public static class 부모 {
+		Long a;
+	}
+	
+	@lombok.SuperBuilder
+	public static class 자식 extends 부모 {
+		String b;
+	}
+	
+	public static void test() {
+		자식 x = 자식.builder().b("").a(5L).build();
+	}
+}