Manual-Layout Snapshots not working. Always Auto-Layout

Describe the bug Whenever a snapshot is created from a workflow. we ignore the position values for the nodes. Hence all snapshots will be shown as auto-layout and never manual-layout even when they're supposed to be.

Version number Latest version
I have reproduced this locally on main:

• Yes
• No

To Reproduce Steps to reproduce the behavior:

1. Go to a workflow
2. Turn it to manual-layout. move nodes. save and run [run-1]
3. come back to this workflow. move nodes once again. save and run [run-2]
4. Go to the history page and view [run-1]
5. You'll notice it's displayed without the snapshot being manually laid out as it was during your run. instead, it's auto laid out.

Expected behavior Show manually laid out snapshots when I view history

Screenshots If applicable, add screenshots to help explain your problem.

Additional context
Look here
https://github.com/OpenFn/lightning/blob/a53b139040cb342370015a508b9352d502a37b2a/lib/lightning/workflows/snapshot.ex#L19-L25

Start with lib/lightning/workflows/snapshot.ex at lines 19-25, then trace how workflow snapshots are created and how node positions are stored. Reproduce the listed run-1 and run-2 steps and verify that the history view preserves the manual layout from run-1 instead of applying auto-layout.