Alias the event_platform_helper.event_helper to Drupal\event_platform_helper\EventHelper

Problem/Motivation

Trying to install a recent version of event_platform_starter 2.0.x (as a site recipe) yields errors like:

An AJAX HTTP error occurred.
HTTP Result Code: 200
Debugging information follows.
Path: /core/install.php?profile=drupal_cms_installer&langcode=en&name=1&template=1&id=1&op=do_nojs&op=do
StatusText: parsererror
ResponseText: Symfony\Component\DependencyInjection\Exception\RuntimeException: Cannot autowire service "Drupal\event_horizon\Hook\EventHorizonHooks": argument "$eventHelper" of method "__construct()" references class "Drupal\event_platform_helper\EventHelper" but no such service exists. You should maybe alias this class to the existing "event_platform_helper.event_helper" service. in Symfony\Component\DependencyInjection\Compiler\DefinitionErrorExceptionPass->process() (line 48 of /var/www/html/vendor/symfony/dependency-injection/Compiler/DefinitionErrorExceptionPass.php).

Proposed resolution

Alias the service.