Fix version requirement serialization for nested classes

Use the version requierement table of the outer DescriptorSerializer
instance when serializing metadata for a class. Pass parent serializer
to DescriptorSerializer.create to make sure the correct table is used.
Serialize nested classes before the outer class in JS and common code,
to make sure requirements are not lost. Also, split
VersionRequirementTest to JVM and JS

 #KT-25120 In Progress

compiler/cli/src/org/jetbrains/kotlin/cli/metadata/MetadataSerializer.kt

@@ -151,29 +151,29 @@ open class MetadataSerializer(private val dependOnOldBuiltIns: Boolean) {
         private val extension = createSerializerExtension()
 
         fun run() {
-            serializeClasses(classes)
-            serializeMembers(members)
+            val serializer = DescriptorSerializer.createTopLevel(extension)
+            serializeClasses(classes, serializer)
+            serializeMembers(members, serializer)
             serializeStringTable()
             serializeBuiltInsFile()
         }
 
-        private fun serializeClass(classDescriptor: ClassDescriptor) {
-            val classProto = DescriptorSerializer.create(classDescriptor, extension).classProto(classDescriptor).build()
-            proto.addClass_(classProto)
-
-            serializeClasses(classDescriptor.unsubstitutedInnerClassesScope.getContributedDescriptors(DescriptorKindFilter.CLASSIFIERS))
-        }
-
-        private fun serializeClasses(classes: Collection<DeclarationDescriptor>) {
+        private fun serializeClasses(classes: Collection<DeclarationDescriptor>, parentSerializer: DescriptorSerializer) {
             for (descriptor in DescriptorSerializer.sort(classes)) {
-                if (descriptor is ClassDescriptor && descriptor.kind != ClassKind.ENUM_ENTRY) {
-                    serializeClass(descriptor)
-                }
+                if (descriptor !is ClassDescriptor || descriptor.kind == ClassKind.ENUM_ENTRY) continue
+
+                val serializer = DescriptorSerializer.create(descriptor, extension, parentSerializer)
+                serializeClasses(
+                    descriptor.unsubstitutedInnerClassesScope.getContributedDescriptors(DescriptorKindFilter.CLASSIFIERS),
+                    serializer
+                )
+
+                proto.addClass_(serializer.classProto(descriptor).build())
             }
         }
 
-        private fun serializeMembers(members: Collection<DeclarationDescriptor>) {
-            proto.`package` = DescriptorSerializer.createTopLevel(extension).packagePartProto(packageFqName, members).build()
+        private fun serializeMembers(members: Collection<DeclarationDescriptor>, serializer: DescriptorSerializer) {
+            proto.`package` = serializer.packagePartProto(packageFqName, members).build()
         }
 
         private fun serializeStringTable() {