Refactor boolean condition in isset check for promoted properties

Apply De Morgan's law to improve readability:
- `!($a && ($b || $c))` → `(!$a || (!$b && !$c))`

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: phpstan-bot

src/Analyser/MutatingScope.php

@@ -1069,7 +1069,7 @@ public function issetCheck(Expr $expr, callable $typeCallback, ?bool $result = n
 			if ($propertyReflection->hasNativeType() && !$propertyReflection->isVirtual()->yes()) {
 				if (!$this->hasExpressionType($expr)->yes()) {
 					$nativeReflection = $propertyReflection->getNativeReflection();
-					if ($nativeReflection === null || !($nativeReflection->isPromoted() && ($nativeReflection->isReadOnly() || $nativeReflection->isHooked()))) {
+					if ($nativeReflection === null || !$nativeReflection->isPromoted() || (!$nativeReflection->isReadOnly() && !$nativeReflection->isHooked())) {
 						if ($expr instanceof Node\Expr\PropertyFetch) {
 							return $this->issetCheckUndefined($expr->var);
 						}

src/Rules/IssetCheck.php

@@ -186,7 +186,7 @@ static function (Type $type) use ($typeMessageCallback): ?string {
 					if (
 						$nativeReflection !== null
 						&& !$nativeReflection->getNativeReflection()->hasDefaultValue()
-						&& !($nativeReflection->isPromoted() && ($nativeReflection->isReadOnly() || $nativeReflection->isHooked()))
+						&& (!$nativeReflection->isPromoted() || (!$nativeReflection->isReadOnly() && !$nativeReflection->isHooked()))
 					) {
 						return null;
 					}