Code Modernization: Remove `final` keyword from private methods.

Declaring a `private` method as `final` is an oxymoron, as `private` methods cannot be overloaded anyway.

Using `final private function...` will generate a warning in PHP 8.

Props jrf.
Fixes #50897.
Built from https://develop.svn.wordpress.org/trunk@48788


git-svn-id: http://core.svn.wordpress.org/trunk@48550 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-session-tokens.php

@@ -66,7 +66,7 @@ abstract class WP_Session_Tokens {
 	 * @param string $token Session token to hash.
 	 * @return string A hash of the session token (a verifier).
 	 */
-	final private function hash_token( $token ) {
+	private function hash_token( $token ) {
 		// If ext/hash is not present, use sha1() instead.
 		if ( function_exists( 'hash' ) ) {
 			return hash( 'sha256', $token );

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.6-alpha-48783';
+$wp_version = '5.6-alpha-48788';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.