value attribute removed from option element on the Checkout block

[Rahmon]

I'm trying to add some fields "after" the checkout-order-summary-block with the following code snippet:

add_filter(
	'render_block_woocommerce/checkout-order-summary-block',
	function( $block_content ) {
		$select = '<input value="input value" /> <select><option value="1">My option</option></select>';

		return $block_content . $select;
	},
	10
);

The output:

However, the attribute value from the option elements is removed. The same doesn't happen with the input field.

I confirmed that the value attribute is present when the response comes from the backend. So something happens on the frontend (maybe a sanitization?)

If I change the hook from render_block_woocommerce/checkout-order-summary-block to render_block_woocommerce/checkout, it works as expected (the value attribute is not removed)

add_filter(
	'render_block_woocommerce/checkout',
	function( $block_content ) {
		$select = '<input value="input value" /> <select><option value="1">My option</option></select>';

		return $block_content . $select;
	},
	10
);

Is this the expected behaviour? Is the approach I used correct?