Fix some minor phpstan issues, reported in builds

Author: lisachenko

src/Aop/Framework/AbstractInterceptor.php

@@ -101,7 +101,6 @@ public static function unserializeAdvice(array $adviceData): Closure
             $aspect = AspectKernel::getInstance()->getContainer()->getService($aspectName);
             $advice = (new ReflectionMethod($aspectName, $methodName))->getClosure($aspect);
 
-            assert(isset($advice), 'getClosure() can not be null on modern PHP versions');
             self::$localAdvicesCache["$aspectName->$methodName"] = $advice;
         }
 

src/Aop/Framework/ClassFieldAccess.php

@@ -26,7 +26,7 @@ final class ClassFieldAccess extends AbstractJoinpoint implements FieldAccess
     /**
      * Stack frames to work with recursive calls or with cross-calls inside object
      *
-     * @phpstan-var array<int, array{object, FieldAccessType, mixed, mixed}>>
+     * @phpstan-var array<int, array{object, FieldAccessType, mixed, mixed}>
      */
     private array $stackFrames = [];
 

src/Aop/Framework/DynamicClosureMethodInvocation.php

@@ -64,7 +64,7 @@ public function proceed(): mixed
         // Rebind the closure if instance was changed since last time
         // This code won't work with {@see Closure::call()} as it fails to rebind closure created from method
         if ($this->closureInstance !== $this->instance) {
-            $this->closureToCall   = $this->closureToCall?->bindTo($this->instance, $this->reflectionMethod->class);
+            $this->closureToCall   = $this->closureToCall->bindTo($this->instance, $this->reflectionMethod->class);
             $this->closureInstance = $this->instance;
         }
 

src/Core/AttributeAspectLoaderExtension.php

@@ -70,9 +70,7 @@ protected function getAdvice(
         Aspect $aspect,
         ReflectionMethod $aspectMethod
     ): Interceptor {
-        $adviceCallback = $aspectMethod->getClosure($aspect);
-        assert($adviceCallback instanceof Closure, "getClosure should always return Closure");
-
+        $adviceCallback     = $aspectMethod->getClosure($aspect);
         $adviceOrder        = $interceptorAttribute->order;
         $pointcutExpression = $interceptorAttribute->expression;
         return match (true) {

src/Proxy/Part/InterceptedConstructorGenerator.php

@@ -58,7 +58,6 @@ public function __construct(
         } else {
             $constructorGenerator = new MethodGenerator('__construct', [], [], $constructorBody);
         }
-        assert($constructorGenerator !== null, "Constructor generator should be initialized");
         $this->constructorGenerator = $constructorGenerator;
     }