core: fix classes import naming

jadx-samples/src/main/java/jadx/samples/TestInnerNames.java

@@ -0,0 +1,36 @@
+package jadx.samples;
+
+public class TestInnerNames extends AbstractTest {
+
+	public int D;
+
+	public class A extends TestInner.MyThread {
+		public A(String name) {
+			super(name);
+		}
+	}
+
+	public class B extends A {
+		public B(String name) {
+			super(name);
+		}
+
+		public class C extends TestInner2.B {
+		}
+	}
+
+	public class C extends TestInner2.B {
+	}
+
+	public class D extends TestInner2.D {
+	}
+
+	@Override
+	public boolean testRun() throws Exception {
+		return true;
+	}
+
+	public static void main(String[] args) throws Exception {
+		new TestInnerNames().testRun();
+	}
+}