Avoid assertion in bridges-generation for light classes

^KT-11656

compiler/testData/asJava/lightClasses/compilationErrors/EnumNameOverride.kt

@@ -0,0 +1,11 @@
+// EnumNameOverride
+interface Foo {
+    fun name(): String
+}
+
+interface Bar : Foo {
+    override fun name() = name
+    var name: String
+}
+
+enum class EnumNameOverride : Bar