Global styles: inherit all typography styles.

This PR syncs the changes initially added to Gutenberg in https://github.com/WordPress/gutenberg/pull/70676.

See https://github.com/WordPress/wordpress-develop/pull/9268.
See https://core.trac.wordpress.org/ticket/63700.

Fixes #63700.
Built from https://develop.svn.wordpress.org/trunk@61021


git-svn-id: http://core.svn.wordpress.org/trunk@60357 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/theme.json

@@ -383,6 +383,10 @@
 				"typography": {
 					"fontSize": "inherit",
 					"fontFamily": "inherit",
+					"fontStyle": "inherit",
+					"fontWeight": "inherit",
+					"letterSpacing": "inherit",
+					"textTransform": "inherit",
 					"lineHeight": "inherit",
 					"textDecoration": "none"
 				},

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.9-alpha-61020';
+$wp_version = '6.9-alpha-61021';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.