Merge branch '4.3' into 4.4

* 4.3:
  [Messenger] Removed named parameters and replaced with `?` placeholders for sqlsrv compatibility
  [HttpClient] use "idle" instead of "inactivity" when telling about the timeout option
  Create mailBody with only attachments part present
  [Messenger] Fix incompatibility with FrameworkBundle <4.3.1

Author: fabpot

DependencyInjection/Configuration.php

@@ -1365,7 +1365,7 @@ private function addHttpClientSection(ArrayNodeDefinition $rootNode)
                                     ->info('A comma separated list of hosts that do not require a proxy to be reached.')
                                 ->end()
                                 ->floatNode('timeout')
-                                    ->info('Defaults to "default_socket_timeout" ini parameter.')
+                                    ->info('The idle timeout, defaults to the "default_socket_timeout" ini parameter.')
                                 ->end()
                                 ->scalarNode('bindto')
                                     ->info('A network interface name, IP address, a host name or a UNIX socket to bind to.')

Resources/config/console.xml

@@ -82,7 +82,7 @@
         </service>
 
         <service id="console.command.messenger_consume_messages" class="Symfony\Component\Messenger\Command\ConsumeMessagesCommand">
-            <argument type="service" id="messenger.routable_message_bus" />
+            <argument /> <!-- Routable message bus -->
             <argument type="service" id="messenger.receiver_locator" />
             <argument type="service" id="logger" on-invalid="null" />
             <argument type="collection" /> <!-- Receiver names -->