Fix: Sentry trace warning

[Meldiron]

Error from deletes worker results in log with following warning on Sentry:

Inspecting the trace, I noticed:

appwrite-worker-deletes  |   [1]=>
appwrite-worker-deletes  |   array(3) {
appwrite-worker-deletes  |     ["filename"]=>
appwrite-worker-deletes  |     string(0) ""
appwrite-worker-deletes  |     ["lineno"]=>
appwrite-worker-deletes  |     string(0) ""
appwrite-worker-deletes  |     ["function"]=>
appwrite-worker-deletes  |     string(22) "Utopia\Queue\{closure}"
appwrite-worker-deletes  |   }

This PR replaces empty string on line number with number 0. That results in error going away.

• Manual QA: