Update Subscribe.html of Module-Newsletter

Removed the sr-only from the button, to make it visable again. 
issue #24027

Author: Krielkip

app/code/Magento/Newsletter/view/frontend/templates/subscribe.phtml

@@ -30,7 +30,7 @@
                 </div>
             </div>
             <div class="actions">
-                <button class="action subscribe primary sr-only"
+                <button class="action subscribe primary"
                         title="<?= $block->escapeHtmlAttr(__('Subscribe')) ?>"
                         type="submit"
                         aria-label="Subscribe">