[Bug] `uploadData()` not retried after exception using `newClientImplementation = true`

[luanrodrigsr]

Description

Hi!

I'm observing a strange behavior in the PowerSyncBackendConnector when it is trying to upload data using the new client implementation.

The documentation for the function uploadData() says "Any thrown errors will result in a retry after the configured wait period (default: 5 seconds)", however I verified that, even with an exception being thrown in the function's overridden code block, the SDK treats the upload as completed:

2026-04-03 12:59:48.471  2718-2992  [MANAGEDDATABASE]   br.com.accelero V   crud upload: notify completion
2026-04-03 12:59:48.476  2718-2992  [MANAGEDDATABASE]   br.com.accelero  V  powersync_control: CompletedUpload
2026-04-03 12:59:48.477  2718-2992  [MANAGEDDATABASE]   br.com.accelero  V  control result: []

By changing the default SyncOptions to newClientImplementation = false, everything works as expected.

Environment

PowerSync Kotlin SDK: 1.11.2
Kotlin: 2.3.20

[simolus3]

At which point in time is the"notify completion" line being logged, directly after the exception? It should be after we've retried uploads. The old and new clients use the same path for uploads, only the powersync_control: CompletedUpload and control result: [] lines should be missing in the old client.