Sync: ensure workflows can be removed

[josephjclark]

• In v1 deploy workflows cannot be removed because of the error generated here: https://github.com/OpenFn/kit/blob/main/packages/deploy/src/stateTransform.ts#L464
• Not sure how this works in v2 deploy

The provisioner will remove workflows, steps and edges if delete: true is passed. It's the CLI's job to detect the removal and set this flag.

Ensure it works in v1 and v2 and is well tested.

[josephjclark]

State of v2 is:

• removal is handled in merge
• removed items are just removed, they;re not flagged with delete (we need an option for this behaviour)
• If I remove a step in v2 it seems deploy will just throw an error Edge references unknown target "undefined". seems a node's id changed without edges connecting to it being updated.
• If I remove a workflow in v2 I get a different error sourceWorkflow.canMergeInto is not a function

So basically this is completely untested and supported in v2 :( Feels like a pretty big oversight