K2: add package FQ name to ClassId of anonymous objects

This is needed because in order to figure out which declarations are
visible from anonymous objects in terms of overridability (see
`FirVisibilityChecker.isVisibleForOverriding`), we need to get the
package name of that anonymous object, because there's package-private
visibility on JVM.

 #KT-62017 Fixed

compiler/tests-gen/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java

@@ -30727,6 +30727,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
             runTest("compiler/testData/codegen/box/package/kt57353.kt");
         }
 
+        @TestMetadata("kt62017.kt")
+        public void testKt62017() throws Exception {
+            runTest("compiler/testData/codegen/box/package/kt62017.kt");
+        }
+
         @TestMetadata("mainInFiles.kt")
         public void testMainInFiles() throws Exception {
             runTest("compiler/testData/codegen/box/package/mainInFiles.kt");