ENGCOM-5762: Resolve 'New Block' form still show 'Store View' field in 'Single Store Mode' issue24387 #24397

 - Merge Pull Request #24397 from edenduong/magento2:2.3-bugfix/single_store_mode_cms_issue24387
 - Merged commits:
   1. 24c022e
   2. aaa7379

Author: magento-engcom-team

app/code/Magento/Cms/view/adminhtml/ui_component/cms_block_form.xml

@@ -111,7 +111,7 @@
                 <dataScope>identifier</dataScope>
             </settings>
         </field>
-        <field name="storeviews" formElement="multiselect">
+        <field name="storeviews" formElement="multiselect" class="Magento\Store\Ui\Component\Form\Field\StoreView">
             <argument name="data" xsi:type="array">
                 <item name="config" xsi:type="array">
                     <item name="source" xsi:type="string">block</item>

app/code/Magento/Store/Ui/Component/Form/Field/StoreView.php

@@ -0,0 +1,61 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\Store\Ui\Component\Form\Field;
+
+use Magento\Framework\View\Element\UiComponent\ContextInterface;
+use Magento\Framework\View\Element\UiComponentFactory;
+use Magento\Store\Model\StoreManagerInterface as StoreManager;
+use Magento\Ui\Component\Form\Field;
+
+/**
+ * Check to disable store view field
+ *
+ * Class \Magento\Store\Ui\Component\Form\Field\StoreView
+ */
+class StoreView extends Field
+{
+    /**
+     * Store manager
+     *
+     * @var StoreManager
+     */
+    private $storeManager;
+
+    /**
+     * StoreView constructor.
+     *
+     * @param ContextInterface $context
+     * @param UiComponentFactory $uiComponentFactory
+     * @param StoreManager $storeManager
+     * @param array $components
+     * @param array $data
+     */
+    public function __construct(
+        ContextInterface $context,
+        UiComponentFactory $uiComponentFactory,
+        StoreManager $storeManager,
+        array $components = [],
+        array $data = []
+    ) {
+        parent::__construct($context, $uiComponentFactory, $components, $data);
+        $this->storeManager = $storeManager;
+    }
+
+    /**
+     * Prepare component configuration
+     *
+     * @return void
+     */
+    public function prepare()
+    {
+        parent::prepare();
+        if ($this->storeManager->isSingleStoreMode()) {
+            $this->_data['config']['componentDisabled'] = true;
+        }
+    }
+}