fix: Change constructor parameter to nullable type

Fix "Implicitly marking parameter $StateBearer as nullable is deprecated" since php 8.4

Author: kumy

src/Components/Block.php

@@ -17,6 +17,6 @@ interface Block extends Component
     public static function build(
         Context $Context,
         State $State,
-        Block $Block = null
+        ?Block $Block = null
     );
 }

src/Components/Blocks/BlockQuote.php

@@ -35,7 +35,7 @@ private function __construct($Lines)
     public static function build(
         Context $Context,
         State $State,
-        Block $Block = null
+        ?Block $Block = null
     ) {
         if (\preg_match('/^(>[ \t]?+)(.*+)/', $Context->line()->text(), $matches)) {
             $indentOffset = $Context->line()->indentOffset() + $Context->line()->indent() + \strlen($matches[1]);

src/Components/Blocks/FencedCode.php

@@ -51,7 +51,7 @@ private function __construct($code, $infostring, $marker, $openerLength, $isComp
     public static function build(
         Context $Context,
         State $State,
-        Block $Block = null
+        ?Block $Block = null
     ) {
         $marker = \substr($Context->line()->text(), 0, 1);
 

src/Components/Blocks/Header.php

@@ -39,7 +39,7 @@ private function __construct($text, $level)
     public static function build(
         Context $Context,
         State $State,
-        Block $Block = null
+        ?Block $Block = null
     ) {
         if ($Context->line()->indent() > 3) {
             return null;

src/Components/Blocks/IndentedCode.php

@@ -32,7 +32,7 @@ private function __construct($code)
     public static function build(
         Context $Context,
         State $State,
-        Block $Block = null
+        ?Block $Block = null
     ) {
         if (isset($Block) && $Block instanceof Paragraph && ! ($Context->precedingEmptyLines() > 0)) {
             return null;

src/Components/Blocks/Markup.php

@@ -124,7 +124,7 @@ private function __construct($html, $type, $closed = false)
     public static function build(
         Context $Context,
         State $State,
-        Block $Block = null
+        ?Block $Block = null
     ) {
         $text = $Context->line()->text();
         $rawLine = $Context->line()->rawLine();

src/Components/Blocks/Paragraph.php

@@ -32,7 +32,7 @@ private function __construct($text)
     public static function build(
         Context $Context,
         State $State,
-        Block $Block = null
+        ?Block $Block = null
     ) {
         return new self($Context->line()->text());
     }

src/Components/Blocks/Reference.php

@@ -28,7 +28,7 @@ private function __construct(State $State)
     public static function build(
         Context $Context,
         State $State,
-        Block $Block = null
+        ?Block $Block = null
     ) {
         if (\preg_match(
             '/^\[(.+?)\]:[ ]*+<?(\S+?)>?(?:[ ]+["\'(](.+)["\')])?[ ]*+$/',

src/Components/Blocks/Rule.php

@@ -22,7 +22,7 @@ private function __construct()
     public static function build(
         Context $Context,
         State $State,
-        Block $Block = null
+        ?Block $Block = null
     ) {
         if ($Context->line()->indent() > 3) {
             return null;

src/Components/Blocks/SetextHeader.php

@@ -39,7 +39,7 @@ private function __construct($text, $level)
     public static function build(
         Context $Context,
         State $State,
-        Block $Block = null
+        ?Block $Block = null
     ) {
         if (! isset($Block) || ! $Block instanceof Paragraph || $Context->precedingEmptyLines() > 0) {
             return null;