Always create descriptors for class object psi element in lazy resolve

KT-4397 Exception: @NotNull method org/jetbrains/jet/lang/resolve/lazy/ResolveSession.getClassDescriptor must not return null

 #KT-4397 Fixed

compiler/testData/loadJava/compiledKotlin/annotations/classes/ClassObjectInStaticNestedClass.kt

@@ -0,0 +1,9 @@
+package test
+
+class A {
+    class B {
+        class object {
+            val TEST = 1
+        }
+    }
+}