CLS issue on warning modal

[rhoerr]

Great to see the 'extend session' warning modal! Thanks for adding that!

One issue with the modal: it flashes and then disappears during page load, causing some layout shift. Can you add display: none or similar to hide it during load until the modal is initialized, to prevent that?

ref: #14 #15

magento2-pci-4-compatibility/view/adminhtml/templates/modal.phtml

Lines 20 to 30 in e772d27

	<div id="session-expire-warning-modal">
	<p style="font-size:48px;color:#FF0000">&#x26A0;</p>
	<p id="session-warning-message">
	<?= __(
	'Your session will expire in one minute. ' .
	'Please save your changes or extend your session to continue working.'
	) ?>
	</p>
	<input type="hidden" id="session-extend-url" value="<?= $escaper->escapeUrl($extendSessionUrl) ?>"/>
	<input type="hidden" id="session-lifetime" value="<?= $escaper->escapeHtmlAttr((string)$sessionLifetime) ?>"/>
	</div>