Class ResourceResponseSubscriber not found in LinkManagerBase causes fatal error

Problem/Motivation

I got a fatal error in 'hal_json' entity serialization:

The website encountered an unexpected error. Please try again later.
Error: Class 'Drupal\rest\EventSubscriber\ResourceResponseSubscriber' not found in Drupal\hal\LinkManager\LinkManagerBase->getLinkDomain() (line 65 of core/modules/hal/src/LinkManager/LinkManagerBase.php).

Drupal\hal\LinkManager\LinkManagerBase->getLinkDomain(Array) (Line: 72)
Drupal\hal\LinkManager\TypeLinkManager->getTypeUri('node', 'page', Array) (Line: 38)
Drupal\hal\LinkManager\LinkManager->getTypeUri('node', 'page', Array) (Line: 71)
Drupal\hal\Normalizer\ContentEntityNormalizer->normalize(Object, 'hal_json', Array) (Line: 142)
...

I noticed that the recently closed issue #2864816: HAL LinkManager doesn't add 'url.site' cache context when needed introduces the use of the missing class 'ResourceResponseSubscriber' belonging to the 'rest' module. From the committed patch #45 of that issue:

...
--- a/core/modules/hal/src/LinkManager/LinkManagerBase.php
+++ b/core/modules/hal/src/LinkManager/LinkManagerBase.php
@@ -2,6 +2,8 @@
 
 namespace Drupal\hal\LinkManager;
 
+use Drupal\rest\EventSubscriber\ResourceResponseSubscriber;
+
...

That creates a new dependency of the HAL module on the 'rest' module.

Steps to reproduce

1. fresh install of 8.5-dev Drupal with standard profile
2. enable the HAL module. Will ask to enable serialization as well by dependency
3. download and enable the devel module
4. try this PHP snippet at /devel/php:
   

   $node = \Drupal\node\Entity\Node::create([
     'type' => 'page',
     'title' => 'Test node',
   ]);
   
   $serialized_node = \Drupal::service('serializer')->serialize($node, 'hal_json');
   echo $serialized_node;
   

Proposed resolutions

1. Add dependency declaration in the 'rest' module in HAL
2. Review the implementation of #2864816: HAL LinkManager doesn't add 'url.site' cache context when needed to avoid this dependency

Remaining tasks

• Declare 'rest' dependency in HAL info as a quick/temporary fix.
• Evaluate other options for #2864816: HAL LinkManager doesn't add 'url.site' cache context when needed which do not create dependency on 'rest'.