fix: scheduled type syncing

[ankush]

• Scheduled Job sync when type was changed from scheduled to some other
  type didn't work.
• It updates on every save with message, bad DX IMO (can't save script
  and edit without dismissing)
• This was because of complex walrus which was triggering rest of code
  even when nothing changed. Maybe walrus opponents were onto something.
• Truthy couples two different operations and hence makes code
  complicated. In most cases where these checks are required it's not
  performance critical, we can do 1 more function call to avoid this
  coupling of change + actual value.

There are two distinct cases that need to be handled while syncing:

1. Switching away from scheduled type - Stop script and nothing
   else (not handled correctly)
2. Switching other script fields -> sync script. (handled right
   now but overly executed)