Email Copy of Shipment always checked

email_shipments.patch

--- /vendor/magento/module-shipping/view/adminhtml/templates/create/items.phtml	2020-04-23 08:56:44.000000000 +0200
+++ /vendor/magento/module-shipping/view/adminhtml/templates/create/items.phtml	2020-07-06 15:37:15.774409586 +0200
@@ -101,7 +101,9 @@
                            class="admin__control-checkbox"
                            name="shipment[send_email]"
                            value="1"
-                           type="checkbox"/>
+                           type="checkbox"
+                           checked="checked"
+                    />
                     <label class="admin__field-label"
                            for="send_email">
                         <span><?= $block->escapeHtml(__('Email Copy of Shipment')) ?></span></label>