Make the status site backward compatible for Completed status.

[skv93-coder]

Issue Description

Date 26-04-24 discussion with ankush
We want to change Completed status to Done. But we want to make our system backward compatible.
i.e The app should work same if it gets task with status DONE or task with status COMPLTED. This is needed because we have tasks under Completed status and they will be migrated after stabilisation of Done status.

User stories

• As a user, I should be able to change my task status to Done. Remove completed status from dropdown.[Under feature flag]
• As an admin, I should be able to change the status of the task to Done. Remove completed status from dropdown[Under feature flag]
• As a user or admin, my task with the status Done and Completed will show in the same tab Done.[Under feature flag]
• As a user I should be able see my tasks in my-sites with the status Done and Completed under Tab ALL[Under feature flag]

Note: The completed status will get remove from codebase when we enable the feature flag.

Note: This task does not involve DB migration of tasks with status Completed to Done

Places where change is required

https://docs.google.com/document/d/1A7zSfUfF37riudQ9OAoA-_eb9kueW-_8y6HCJu_Lg84/edit

Doubts

How will we direct the user to not use Completed status as it is going to be removed soon?
Solution=> Add a tooltip/model to convey this.

Discussion with @ankushdharkar on Apr 29 2024

1. Do not need tooltip.

Expected Behavior

Current Behavior

Screenshots

Reproducibility

• This issue is reproducible
• This issue is not reproducible

Steps to Reproduce

Severity/Priority

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Additional Information

Checklist

• I have read and followed the project's code of conduct.
• I have searched for similar issues before creating this one.
• I have provided all the necessary information to understand and reproduce the issue.
• I am willing to contribute to the resolution of this issue.