Fix Ruby FFI to pass `MiniTable` to `upb_Message_New()` aka `new_message_from_def()`.

PiperOrigin-RevId: 635226405

ruby/lib/google/protobuf/ffi/descriptor.rb

@@ -152,7 +152,7 @@ module Google
 
     class FFI
       # MessageDef
-      attach_function :new_message_from_def, :upb_Message_New,                        [Descriptor, Internal::Arena], :Message
+      attach_function :new_message_from_def, :upb_Message_New,                        [MiniTable.by_ref, Internal::Arena], :Message
       attach_function :field_count,          :upb_MessageDef_FieldCount,              [Descriptor], :int
       attach_function :get_message_file_def, :upb_MessageDef_File,                    [:pointer], :FileDef
       attach_function :get_message_fullname, :upb_MessageDef_FullName,                [Descriptor], :string

ruby/lib/google/protobuf/ffi/internal/convert.rb

@@ -70,7 +70,7 @@ module Google
               case wkt
               when :Timestamp
                 raise TypeError.new "Invalid type #{value.class} to assign to submessage field '#{name}'." unless value.kind_of? Time
-                new_message = Google::Protobuf::FFI.new_message_from_def msg_or_enum_def, arena
+                new_message = Google::Protobuf::FFI.new_message_from_def Google::Protobuf::FFI.get_mini_table(msg_or_enum_def), arena
                 sec = Google::Protobuf::FFI::MessageValue.new
                 sec[:int64_val] = value.tv_sec
                 sec_field_def = Google::Protobuf::FFI.get_field_by_number msg_or_enum_def, 1
@@ -82,7 +82,7 @@ module Google
                 return_value[:msg_val] = new_message
               when :Duration
                 raise TypeError.new "Invalid type #{value.class} to assign to submessage field '#{name}'." unless value.kind_of? Numeric
-                new_message = Google::Protobuf::FFI.new_message_from_def msg_or_enum_def, arena
+                new_message = Google::Protobuf::FFI.new_message_from_def Google::Protobuf::FFI.get_mini_table(msg_or_enum_def), arena
                 sec = Google::Protobuf::FFI::MessageValue.new
                 sec[:int64_val] = value
                 sec_field_def = Google::Protobuf::FFI.get_field_by_number msg_or_enum_def, 1

ruby/lib/google/protobuf/ffi/message.rb

@@ -551,7 +551,7 @@ module Google
           #   one if omitted or nil.
           def initialize(initial_value = nil, arena = nil, msg = nil)
             @arena = arena || Google::Protobuf::FFI.create_arena
-            @msg = msg || Google::Protobuf::FFI.new_message_from_def(self.class.descriptor, @arena)
+            @msg = msg || Google::Protobuf::FFI.new_message_from_def(Google::Protobuf::FFI.get_mini_table(self.class.descriptor), @arena)
 
             unless initial_value.nil?
               raise ArgumentError.new "Expected hash arguments or message, not #{initial_value.class}" unless initial_value.respond_to? :each