General: Remove duplicate type="button" attribute from the "Change|Choose Site Icon" button.

Introduced in [57602].

Props kkmuffme, audrasjb.
Fixes #62942.

git-svn-id: https://develop.svn.wordpress.org/trunk@59806 602fd350-edb4-49c9-b593-d223f7449a82

Author: dream-encode

src/wp-admin/options-general.php

@@ -184,7 +184,6 @@
 	<div class="site-icon-action-buttons">
 		<button type="button"
 			id="choose-from-library-button"
-			type="button"
 			class="<?php echo esc_attr( $classes_for_button ); ?>"
 			data-alt-classes="<?php echo esc_attr( $classes_for_button_on_change ); ?>"
 			data-size="512"