[FEATURE]: Enable unblocking users for DIT profile access

[Nikuunj]

Feature and its Use Cases

In the Decentralized Identity Tokens (DIT) system, once a user is blocked, there should be a way to allow access again if needed. Currently, there is no clear functionality to remove a user from the blocked list.

Proposed functionality:

• Add a function to unblock users (e.g., unblockUser(address user)).
• Remove the user from the blocked list.
• Restore their ability to view and interact with the profile.
• Emit an event when a user is unblocked.

Use cases:

• Allow access again after resolving issues with a user.
• Correct accidental blocks.

Additional Context

No response

Code of Conduct

• I have joined the Discord server and will post updates there
• I have searched existing issues to avoid duplicates