test(compiler): add native scalar property diagnostic test for namespaced class names

- Add test case for namespaced class name escaping in C++ string generation
- Verify proper error message display for type mismatch in namespaced properties
- Test native scalar property assignments with configuration arrays
- Validate TypeError handling for invalid type assignments in namespaced context

fix(compiler): ensure namespaced class names are properly escaped in property type checks

- Update genCharPtr call with escape parameter set to true
- Fix object property type check display name generation for namespaced classes
- Maintain backward compatibility with existing property access patterns

src/Parser/PropertyAccessTrait.php

@@ -544,7 +544,7 @@ trait PropertyAccessTrait
             return $rightExpr;
         }
         if ($rightType === Type::VAR && ($helper = $this->getNativeScalarPropertyTypeCheckHelper($def)) !== null) {
-            return $helper . '(' . $rightExpr . ', ' . $this->genCharPtr($this->getObjectPropertyTypeCheckDisplayName($left)) . ')';
+            return $helper . '(' . $rightExpr . ', ' . $this->genCharPtr($this->getObjectPropertyTypeCheckDisplayName($left), true) . ')';
         }
 
         $rightClass = $this->detectClassOfExpr($right);

tests/compiler/object_property/native-scalar-property-namespaced-diagnostic.phpt

@@ -0,0 +1,43 @@
+--TEST--
+Native scalar property diagnostics escape namespaced class names in generated C++ strings
+--FILE--
+<?php
+namespace Px\C4129Repro {
+    use native_types;
+
+    class NamespacedScalarProperty
+    {
+        public int $intValue = 0;
+        public float $floatValue = 0.0;
+        public bool $boolValue = false;
+
+        public function assign(array $config): void
+        {
+            $this->intValue = $config['int'] ?? 1;
+            $this->floatValue = $config['float'] ?? 2.5;
+            $this->boolValue = $config['bool'] ?? false;
+        }
+    }
+}
+
+namespace {
+    function main(): void
+    {
+        $box = new \Px\C4129Repro\NamespacedScalarProperty();
+        $box->assign(['int' => 12, 'float' => 3.5, 'bool' => true]);
+
+        var_dump($box->intValue, $box->floatValue, $box->boolValue);
+
+        try {
+            $box->assign(['int' => 1, 'float' => 2.5, 'bool' => 'invalid']);
+        } catch (\TypeError $e) {
+            var_dump($e->getMessage());
+        }
+    }
+}
+?>
+--EXPECT--
+int(12)
+float(3.5)
+bool(true)
+string(96) "Cannot assign string to property Px\C4129Repro\NamespacedScalarProperty::$boolValue of type bool"