I18N: Remove unnecessary HTML from "Previewing:" string in `WP_Customize_Theme_Control`.

Props ramiy.
Fixes #47271.
Built from https://develop.svn.wordpress.org/trunk@45435


git-svn-id: http://core.svn.wordpress.org/trunk@45246 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/customize/class-wp-customize-theme-control.php

@@ -103,10 +103,7 @@ class WP_Customize_Theme_Control extends WP_Customize_Control {
 			<# if ( data.theme.active ) { #>
 				<div class="theme-id-container">
 					<h3 class="theme-name" id="{{ data.section }}-{{ data.theme.id }}-name">
-						<?php
-						/* translators: %s: theme name */
-						printf( __( '<span>Previewing:</span> %s' ), '{{ data.theme.name }}' );
-						?>
+						<span><?php _e( 'Previewing:' ); ?></span> {{ data.theme.name }}
 					</h3>
 					<div class="theme-actions">
 						<button type="button" class="button button-primary customize-theme" aria-label="<?php echo esc_attr( $customize_label ); ?>"><?php _e( 'Customize' ); ?></button>

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.3-alpha-45434';
+$wp_version = '5.3-alpha-45435';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.