[Experimental] Fix: add an unique id to each list item to prevent diffing issue (#45304)

* fix: add an unique id to each list item to prevent diffing issue

* chore: changelog

plugins/woocommerce/changelog/fix-45300

@@ -0,0 +1,5 @@
+Significance: patch
+Type: fix
+Comment: [Experimental] Fix: add an unique id to each list item to prevent diffing issue
+
+

plugins/woocommerce/src/Blocks/InteractivityComponents/CheckboxList.php

@@ -43,7 +43,7 @@ class CheckboxList {
 							// translators: %s: checkbox label.
 							$i18n_label = sprintf( __( 'Checkbox: %s', 'woocommerce' ), $item['aria_label'] ?? '' );
 							?>
-							<li>
+							<li data-wc-key="<?php echo esc_attr( $item['id'] ); ?>">
 								<div class="wc-block-components-checkbox">
 									<label for="<?php echo esc_attr( $item['id'] ); ?>">
 										<input