JvmDefault. Allow non default inheritance with special flag

#KT-47000

compiler/testData/codegen/box/jvm8/defaults/nonDefaultInheritance/specialization.kt

@@ -0,0 +1,32 @@
+// CHECK_BYTECODE_LISTING
+// TARGET_BACKEND: JVM
+// IGNORE_BACKEND_FIR: JVM_IR
+// JVM_TARGET: 1.8
+// WITH_RUNTIME
+// MODULE: lib
+// !JVM_DEFAULT_MODE: all
+// FILE: Foo.kt
+
+interface Foo<T> {
+    fun foo(p: T) = p
+}
+
+interface Foo2<T> {
+    fun foo(p: T): T = null!!
+}
+
+// MODULE: main(lib)
+// !JVM_DEFAULT_MODE: disable
+// !JVM_DEFAULT_ALLOW_NON_DEFAULT_INHERITANCE
+// FILE: main.kt
+class DerivedClass : Foo<String>
+
+interface DerivedInterface<T> : Foo2<T> {
+    override fun foo(p: T) = p
+}
+
+class DerivedClassWithSpecialization : DerivedInterface<String>
+
+fun box(): String {
+    return DerivedClass().foo("O") + DerivedClassWithSpecialization().foo("K")
+}