Reported by @shrewd lark
Bug Report: New Chat always has the message of older custom instructions
`Steps to Reproduce`
Create a new chat, close the desktop app on macOS. Open it again
`Expected Result`
New Chat shouldn't have the message "This chat uses an older version of your custom instructions.
`Actual Result`
Any new new chat has the message "This chat uses an older version of your custom instructions.
`Environment`
macOS App Version 1.2024.289 (1729717854)