Implement isInheritor method with utility method that has special behaviour for anonymous classes

compiler/light-classes/src/org/jetbrains/kotlin/asJava/KtLightClassForAnonymousDeclaration.kt

@@ -18,6 +18,7 @@ package org.jetbrains.kotlin.asJava
 
 import com.intellij.openapi.diagnostic.Logger
 import com.intellij.psi.*
+import com.intellij.psi.impl.InheritanceImplUtil
 import com.intellij.psi.search.GlobalSearchScope
 import com.intellij.reference.SoftReference
 import org.jetbrains.kotlin.name.FqName
@@ -99,6 +100,14 @@ internal open class KtLightClassForAnonymousDeclaration(name: FqName,
         return classOrObject.hashCode()
     }
 
+    override fun isInheritor(baseClass: PsiClass, checkDeep: Boolean): Boolean {
+        if (baseClass is KtLightClassForExplicitDeclaration) {
+            return super.isInheritor(baseClass, checkDeep)
+        }
+
+        return InheritanceImplUtil.isInheritor(this, baseClass, checkDeep)
+    }
+
     override fun getNameIdentifier() = null
     override fun getQualifiedName(): String? = null
     override fun getModifierList(): PsiModifierList? = null