[KLIB] Fix deserialization of anonymous classes

In case of initializing property or function with anonymous object the
object is being exposed outside its field/function's scope and
accessible on previous level. In this case in `declarations only` mode
we have unbound symbols. Fix is to force body/initializer loading in
such cases.

Make sure it is deserialized in `declarations'only` mode too.

 - Fix KT-40216
 - Add test

compiler/tests/org/jetbrains/kotlin/codegen/BlackBoxCodegenTestGenerated.java

@@ -15820,6 +15820,11 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             KotlinTestUtils.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("compiler/testData/codegen/box/ir"), Pattern.compile("^(.+)\\.kt$"), null, TargetBackend.JVM, true);
         }
 
+        @TestMetadata("anonymousClassLeak.kt")
+        public void testAnonymousClassLeak() throws Exception {
+            runTest("compiler/testData/codegen/box/ir/anonymousClassLeak.kt");
+        }
+
         @TestMetadata("anonymousObjectInForLoopIteratorAndBody.kt")
         public void testAnonymousObjectInForLoopIteratorAndBody() throws Exception {
             runTest("compiler/testData/codegen/box/ir/anonymousObjectInForLoopIteratorAndBody.kt");