fix: guard factories cache writes

Signed-off-by: memleakd <121398829+memleakd@users.noreply.github.com>

Author: memleakd

system/Cache/FactoriesCache/FileVarExportHandler.php

@@ -21,8 +21,8 @@ public function save(string $key, mixed $val): void
     {
         $val = var_export($val, true);
 
-        if (! is_dir($this->path)) {
-            mkdir($this->path, 0777, true);
+        if (! is_dir($this->path) && ! @mkdir($this->path, 0777, true) && ! is_dir($this->path)) {
+            return;
         }
 
         // Write to temp file first to ensure atomicity
@@ -31,7 +31,9 @@ public function save(string $key, mixed $val): void
             return;
         }
 
-        rename($tmp, $this->path . "/{$key}");
+        if (! @rename($tmp, $this->path . "/{$key}")) {
+            @unlink($tmp);
+        }
     }
 
     public function delete(string $key): void