[skip ci] Update PHP type hints and lower PHP version requirement

Constructor type hints for JsUtils are updated to use nullable type syntax (?JsUtils) for consistency and modern PHP standards. The minimum required PHP version in composer.json is lowered from 8.5 to 8.1.

Author: jcheron

Ajax/common/components/SimpleComponent.php

@@ -16,7 +16,7 @@ abstract class SimpleComponent extends BaseComponent {
 	protected $uiName;
 	protected $events;
 
-	public function __construct(JsUtils $js=NULL) {
+	public function __construct(?JsUtils $js=NULL) {
 		parent::__construct($js);
 		$this->events=array ();
 	}

Ajax/semantic/components/Form.php

@@ -14,7 +14,7 @@ class Form extends SimpleSemExtComponent {
 	/**
 	 * @var array
 	 */
-	public function __construct(JsUtils $js=null) {
+	public function __construct(?JsUtils $js=null) {
 		parent::__construct($js);
 		$this->uiName="form";
 		$this->params["fields"]=[];

Ajax/semantic/components/SimpleSemExtComponent.php

@@ -7,7 +7,7 @@
 
 class SimpleSemExtComponent extends SimpleExtComponent {
 	protected $paramParts;
-	public function __construct(JsUtils $js=NULL) {
+	public function __construct(?JsUtils $js=NULL) {
 		parent::__construct($js);
 		$this->paramParts=array();
 	}

Ajax/semantic/components/Slider.php

@@ -15,7 +15,7 @@
  */
 class Slider extends SimpleSemExtComponent {
 
-	public function __construct(JsUtils $js=NULL) {
+	public function __construct(?JsUtils $js=NULL) {
 		parent::__construct($js);
 		$this->uiName='slider';
 	}

Ajax/semantic/components/Toast.php

@@ -14,7 +14,7 @@
  */
 class Toast extends SimpleSemExtComponent {
 
-	public function __construct(JsUtils $js=NULL) {
+	public function __construct(?JsUtils $js=NULL) {
 		parent::__construct($js);
 		$this->uiName='toast';
 	}

composer.json

@@ -17,7 +17,7 @@
 		"framework"
 	],
 	"require": {
-		"php": ">=8.5",
+		"php": ">=8.1",
 		"frameworks/jquery": "~2.1"
 	},
 	"suggest": {