( bug : UI/UX ) : Remove "Unassigned" filter option from the Mine tab

Description

• This is an enhancement request to improve the filter options in the "Mine" tab of the status site.

Current Behavior

• On the status site, in the Mine tab, where users can view all their assigned tasks, there is a filter dropdown containing multiple options to filter tasks. One of the options available is "Unassigned."

Expected Behavior

• If a user is in the Mine tab, it means all tasks shown are assigned to that user. Therefore, having an "Unassigned" filter option is unnecessary.
• The "Unassigned" option should be removed from the filter dropdown in the Mine tab.

Steps to Reproduce

1. Go to RDS Status Site - Mine Tab.
2. Click on the filter dropdown.
3. Observe that the "Unassigned" option is available in the list.

Screenshots

https://github.com/user-attachments/assets/ef25ae15-df2e-412c-97c9-fb16db021768