Upstream reference: https://github.com/perses/perses/issues/3893

What did you do?

1. Load a dashboard you have permission to edit, in my case, project etm and dashboard etm
2. Click on Time Range dropdown and check existing values:

• Last 5 minutes
• Last 15 minutes
• Last 30 minutes
• Last 1 hour
• Last 6 hours
• Last 12 hours
• Last 24 hours
• Last 7 days
• Last 14 days
• Custom Time Range

1. Choose Last 24 hours
2. Click on Edit button
3. Click on Save button => Save Dashboard modal is opened to confirm "Save current time range as new default (Last 14d) checkbox is checked and click on Save Changes button in this modal
4. Take a look again in the Time Range to check the existence of Last 2 weeks options and it is not shown
5. Go back to the etm project to list other dashboards
6. Load etm dashboard again
7. Result: Notice the Time Range dropdown is showing Last 2 weeks as default
8. Click on Time Range dropdown and check
9. Result: Last 2 weeks entry is shown

Note: If I logout and login again, Time Range is reset, meaning, added values not shown anymore.

What did you expect to see?

Expected Result: New entries/synonyms should not be entered as we already have the original values such as 24h, 7 days and 14 days.