Fix PHPStan error: remove redundant $index check in renameIndex

The null check for $index at line 1125 guarantees it's non-null,
making the $index && condition at line 1134 always true.
PHPStan level 7 flagged this as "Left side of && is always true".

Co-authored-by: abnegate <5857008+abnegate@users.noreply.github.com>

Author: Copilot

composer.json

@@ -49,7 +49,7 @@
         "swoole/ide-helper": "5.1.3",
         "utopia-php/cli": "0.14.*",
         "laravel/pint": "*",
-        "phpstan/phpstan": "*",
+        "phpstan/phpstan": "1.*",
         "rregeer/phpunit-coverage-check": "0.3.*"
     },
     "suggests": {

composer.lock

@@ -1131,7 +1131,7 @@ public function renameIndex(string $collection, string $old, string $new): bool
             throw $this->processException($e);
         }
 
-        if ($index && $deletedindex && $createdindex) {
+        if ($deletedindex && $createdindex) {
             return true;
         }