What problem would you like to solve? Please describe:
The current user interface for enabling maintenance mode only provides options to set a maintenance window of 1, 2, or 4 hours. This may not be adequate for use cases where the maintenance needs to happen for a different duration or when the return-to-normal time is known in advance.

Describe the solution you'd like:
Enable a custom end time option in the maintenance mode feature in the GoAlert UI. The custom end time should adhere to a maximum limit of 24 hours as per the backend validation.

Describe alternatives you've considered:
Currently, in cases where the maintenance needs to happen over a longer period, users would have to either come back and extend the maintenance window manually or potentially constrict their maintenance to shorter windows. Having a custom end time option would eliminate the need for these workarounds.