Editor: Update docblocks for wp_get_global_stylesheet and WP_Theme_JSON::get_stylesheet.

Updates docblocks to account for new use of the `custom-css` string in their `$types` parameters and adds information to deprecation of `wp_get_global_styles_custom_css`.

Props justlevine, isabel_brison, ramonopoly.
Fixes #62665.


git-svn-id: https://develop.svn.wordpress.org/trunk@59499 602fd350-edb4-49c9-b593-d223f7449a82

Author: tellthemachines

src/wp-includes/class-wp-theme-json.php

@@ -1317,6 +1317,8 @@ public function get_settings() {
 	 *                          - `variables`: only the CSS Custom Properties for presets & custom ones.
 	 *                          - `styles`: only the styles section in theme.json.
 	 *                          - `presets`: only the classes for the presets.
+	 *                          - `base-layout-styles`: only the base layout styles.
+	 *                          - `custom-css`: only the custom CSS.
 	 * @param string[] $origins A list of origins to include. By default it includes VALID_ORIGINS.
 	 * @param array    $options {
 	 *     Optional. An array of options for now used for internal purposes only (may change without notice).

src/wp-includes/deprecated.php

@@ -6316,7 +6316,7 @@ function wp_interactivity_process_directives_of_interactive_blocks( array $parse
  * Gets the global styles custom CSS from theme.json.
  *
  * @since 6.2.0
- * @deprecated 6.7.0 Use {@see 'wp_get_global_stylesheet'} instead.
+ * @deprecated 6.7.0 Use {@see 'wp_get_global_stylesheet'} instead for top-level custom CSS, or {@see 'WP_Theme_JSON::get_styles_for_block'} for block-level custom CSS.
  *
  * @return string The global styles custom CSS.
  */

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

@@ -142,7 +142,7 @@ function wp_get_global_styles( $path = array(), $context = array() ) {
  * @since 6.6.0 Resolves relative paths in theme.json styles to theme absolute paths.
  *
  * @param array $types Optional. Types of styles to load.
- *                     It accepts as values 'variables', 'presets', 'styles', 'base-layout-styles'.
+ *                     See {@see 'WP_Theme_JSON::get_stylesheet'} for all valid types.
  *                     If empty, it'll load the following:
  *                     - for themes without theme.json: 'variables', 'presets', 'base-layout-styles'.
  *                     - for themes with theme.json: 'variables', 'presets', 'styles'.