Twenty Nineteen: Add font smoothing to editor styles.

This brings consistency between editor and front-end typography.

Props laurelfulford, sabernhardt, audrasjb.
Fixes #45909.

Built from https://develop.svn.wordpress.org/trunk@54106


git-svn-id: http://core.svn.wordpress.org/trunk@53665 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-content/themes/twentynineteen/style-editor.css

@@ -659,6 +659,8 @@ body .wp-block.aligncenter {
 
 /** === Base Typography === */
 body {
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
   font-size: 22px;
   font-family: "NonBreakingSpaceOverride", "Hoefler Text", Garamond, "Times New Roman", serif;
   line-height: 1.8;

wp-content/themes/twentynineteen/style-editor.scss

@@ -94,6 +94,8 @@ body {
 /** === Base Typography === */
 
 body {
+	-webkit-font-smoothing: antialiased;
+	-moz-osx-font-smoothing: grayscale;
 	font-size: $font__size_base;
 	@include font-family( $font__body );
 	line-height: $font__line-height-body;

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.1-alpha-54105';
+$wp_version = '6.1-alpha-54106';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.