chore: set proper return types on build methods (#2976)

src/Comment.php

@@ -132,7 +132,7 @@ protected function __construct()
      * @internal
      * @param WP_Comment $wp_comment a native WP_Comment instance
      */
-    public static function build(WP_Comment $wp_comment): self
+    public static function build(WP_Comment $wp_comment): static
     {
         $comment = new static();
         $comment->import($wp_comment);

src/MenuItem.php

@@ -122,7 +122,7 @@ class MenuItem extends CoreEntity
      * @param Menu $menu The `Menu` object the menu item is associated with.
      * @return MenuItem a new MenuItem instance
      */
-    public static function build($data, ?Menu $menu = null): self
+    public static function build($data, ?Menu $menu = null): static
     {
         return new static($data, $menu);
     }

src/Post.php

@@ -175,7 +175,7 @@ class Post extends CoreEntity implements DatedInterface, Setupable
      * @internal
      * @return Post
      */
-    public static function build(WP_Post $wp_post): self
+    public static function build(WP_Post $wp_post): static
     {
         $post = new static();
 

src/Term.php

@@ -83,7 +83,7 @@ protected function __construct()
      * @param WP_Term      $wp_term The vanilla WordPress term object to build from.
      * @return Term
      */
-    public static function build(WP_Term $wp_term): self
+    public static function build(WP_Term $wp_term): static
     {
         $term = new static();
         $term->init($wp_term);

src/User.php

@@ -106,7 +106,7 @@ protected function __construct()
     /**
      * Build a new User object.
      */
-    public static function build(WP_User $wp_user): self
+    public static function build(WP_User $wp_user): static
     {
         $user = new static();
         $user->init($wp_user);