This commit displays a banner at the top for demo orgs letting the
user know that the org will be automatically deleted in the
specified number of days. The alerts are prioritized as follows:
- If there are <=7 days left till deletion, the alert is prioritized
above desktop notification queries and is colored red.
- If there are more then 7 days left till deletion, the alert is
prioritized below desktop notification queries.
This is a part of #19523.
Eeshan Garg