Merged PR 33951: Get module version from composer.json

## What's being changed

We're removing `setup_version` from the module.xml file, and using composer.json to decide the version that is output in the dashboard.

## Why it's being changed

Now that we've fully adopted declarative schema, we no longer need to have `setup_version`.

## How to review / test this change

- Review the dashboard
- Run `setup:upgrade`

Related work items: #159467

Plugin/ModulePlugin.php

@@ -3,24 +3,23 @@
 namespace Dotdigitalgroup\Chat\Plugin;
 
 use Dotdigitalgroup\Email\Model\Connector\Module;
-use Magento\Framework\Module\ModuleListInterface;
 
 class ModulePlugin
 {
     const MODULE_NAME = 'Dotdigitalgroup_Chat';
     const MODULE_DESCRIPTION = 'Dotdigital Chat for Magento 2';
 
     /**
-     * @var ModuleListInterface
+     * @var Module
      */
-    private $fullModuleList;
+    private $module;
 
     /**
-     * @param ModuleListInterface $moduleListInterface
+     * @param Module $module
      */
-    public function __construct(ModuleListInterface $moduleListInterface)
+    public function __construct(Module $module)
     {
-        $this->fullModuleList = $moduleListInterface;
+        $this->module = $module;
     }
 
     /**
@@ -32,7 +31,7 @@ public function beforeFetchActiveModules(Module $module, array $modules = [])
     {
         $modules[] = [
             'name' => self::MODULE_DESCRIPTION,
-            'version' => $this->fullModuleList->getOne(self::MODULE_NAME)['setup_version']
+            'version' => $this->module->getModuleVersion(self::MODULE_NAME)
         ];
         return [
             $modules

composer.json

@@ -2,7 +2,7 @@
     "name": "dotmailer/dotmailer-magento2-extension-chat",
     "description": "Dotdigital for Magento 2: Chat module",
     "type": "magento2-module",
-    "version": "1.5.0",
+    "version": "1.6.0-RC1",
     "license": "MIT",
     "repositories": [
         {

etc/module.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0"?>
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
-    <module name="Dotdigitalgroup_Chat" setup_version="1.5.0">
+    <module name="Dotdigitalgroup_Chat">
         <sequence>
             <module name="Dotdigitalgroup_Email" />
             <module name="Magento_Directory" />