Editor: Revert caching of global styles for blocks.

This reverts [58334] to fix a bug where edits to block styles made in the site editor were not showing in the front end.

Props joemcgill, spacedmonkey, andrewserong, hellofromtonya, audrasjb.
See #59595.

Built from https://develop.svn.wordpress.org/trunk@58710


git-svn-id: http://core.svn.wordpress.org/trunk@58112 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/global-styles-and-settings.php

@@ -255,44 +255,8 @@ function wp_add_global_styles_for_blocks() {
 
 	$tree        = WP_Theme_JSON_Resolver::get_merged_data();
 	$block_nodes = $tree->get_styles_block_nodes();
-
-	$can_use_cached = ! wp_is_development_mode( 'theme' );
-	if ( $can_use_cached ) {
-		// Hash global settings and block nodes together to optimize performance of key generation.
-		$hash = md5(
-			wp_json_encode(
-				array(
-					'global_setting' => wp_get_global_settings(),
-					'block_nodes'    => $block_nodes,
-				)
-			)
-		);
-
-		$cache_key = "wp_styles_for_blocks:$hash";
-		$cached    = get_site_transient( $cache_key );
-		if ( ! is_array( $cached ) ) {
-			$cached = array();
-		}
-	}
-
-	$update_cache = false;
-
 	foreach ( $block_nodes as $metadata ) {
-
-		if ( $can_use_cached ) {
-			// Use the block name as the key for cached CSS data. Otherwise, use a hash of the metadata.
-			$cache_node_key = isset( $metadata['name'] ) ? $metadata['name'] : md5( wp_json_encode( $metadata ) );
-
-			if ( isset( $cached[ $cache_node_key ] ) ) {
-				$block_css = $cached[ $cache_node_key ];
-			} else {
-				$block_css                 = $tree->get_styles_for_block( $metadata );
-				$cached[ $cache_node_key ] = $block_css;
-				$update_cache              = true;
-			}
-		} else {
-			$block_css = $tree->get_styles_for_block( $metadata );
-		}
+		$block_css = $tree->get_styles_for_block( $metadata );
 
 		if ( ! wp_should_load_separate_core_block_assets() ) {
 			wp_add_inline_style( 'global-styles', $block_css );
@@ -338,10 +302,6 @@ function wp_add_global_styles_for_blocks() {
 			}
 		}
 	}
-
-	if ( $update_cache ) {
-		set_site_transient( $cache_key, $cached, HOUR_IN_SECONDS );
-	}
 }
 
 /**

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.7-alpha-58709';
+$wp_version = '6.7-alpha-58710';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.