Allow Shopify worker reuse from central cron

modules/erp/import-integration/shopify-webhook-worker.php

@@ -132,19 +132,21 @@ function shopify_webhook_worker_run(PDO $pdo, array $env, int $limit): array
     }
 }
 
-$argvLimit = 20;
-foreach ($argv as $argument) {
+if (PHP_SAPI === 'cli' && realpath($_SERVER['SCRIPT_FILENAME'] ?? '') === __FILE__) {
+    $argvLimit = 20;
+    foreach ($argv as $argument) {
         if (str_starts_with($argument, '--limit=')) {
             $argvLimit = max(1, min(100, (int) substr($argument, 8)));
         }
-}
+    }
 
-try {
+    try {
         $env = expand_env_values(parse_env_file(__DIR__ . '/../../../.env'));
         $pdo = connect_database($env);
         echo json_encode(shopify_webhook_worker_run($pdo, $env, $argvLimit), JSON_UNESCAPED_SLASHES) . PHP_EOL;
         exit(0);
-} catch (Throwable $error) {
+    } catch (Throwable $error) {
         fwrite(STDERR, $error->getMessage() . PHP_EOL);
         exit(1);
+    }
 }