Bug Duty: Notebook - Once Auto Refresh is set, clicking "Set Auto Refresh" deletes the existing setting rather than simply displaying it

## Problem
After setting up a telegraf configuration and setting auto-refresh settings on a Notebook, if I click the "Set Auto Refresh" button to view the settings that I just created, rather than showing me the existing settings, clicking the "Set Auto Refresh" button deletes my settings. This is super annoying!

## Idea
If existing Auto-Refresh settings are set for my Notebook, do not delete them when I click "Set Auto Refresh." Instead, show me the settings that exist.

ACs
- Persist auto-refresh settings when the user sets them then clicks on the "Set Auto Refresh" button on a Notebook.
- Do not auto-delete refresh settings if they exist when the user clicks the "Set Auto Refresh" button on a Notebook.

## Screenshots for reference