Twenty Eleven: Correct height for a Button block without text.

Props ianbelanger, laurelfulford, nayana123.
See #47414.
Built from https://develop.svn.wordpress.org/trunk@45763


git-svn-id: http://core.svn.wordpress.org/trunk@45574 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-content/themes/twentyeleven/editor-blocks.css

@@ -382,6 +382,10 @@ p.has-drop-cap:not(:focus)::first-letter {
 	text-shadow: 0 -1px 0 rgba(0,0,0,0.3);
 }
 
+.wp-block-button .wp-block-button__link[data-is-placeholder-visible=true] {
+    height: auto;
+}
+
 .wp-block-button__link {
 	background: #222;
 	color: #eee;

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.3-alpha-45762';
+$wp_version = '5.3-alpha-45763';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.