Fix issue where name generation on variables of deobfuscated objects were sometimes based off of the original class name, and not the alias.

jadx-core/src/main/java/jadx/core/codegen/NameGen.java

@@ -164,6 +164,7 @@ public class NameGen {
 			if (vName != null) {
 				return vName;
 			}
+			return StringUtils.escape(shortName.toLowerCase());
 		}
 		return StringUtils.escape(type.toString());
 	}