Restore original task id; Fix publish workflow

[rhyskoedijk]

@mburumaxwell sorry, I broke the publish workflow; The task id was renamed during some of the manifest updates, I didn't realise this cannot be renamed once set.

error: Contribution Microsoft.VisualStudio.Services.TaskId.DEPENDABOTTASK is re-using task ID of some other contribution from earlier version. To publish the extension, change the task ID.

[mburumaxwell]

Thanks. I was just about to fix this. For some reason, the dev one was not affected.

[rhyskoedijk]

I didn't run in to the error with my own local build either, so maybe it's a rule that is only applied for public extensions?