Correct "Created" Date Display in API Tokens UI

[rakdutta]

Issue Reference: [#1321](#1321)

Summary

This PR resolves a UI bug where the "Created" date for API tokens on the Admin → Tokens page is incorrectly displayed as "Invalid Date." The issue arises despite the database containing valid creation timestamps for each token.

• Implemented a fix to ensure proper parsing and formatting of the creation timestamps in the UI.
• Verified that the "Created" field now displays the correct date (e.g., 10/22/2025) for each token.

Testing

• Navigated to Admin → Tokens page.
• Confirmed that the "Created" field now correctly displays the creation date for all tokens.

[nmveeresh]

Tested, working fine.

Creation date populating correctly as expected.

In UI - Created: 10/23/2025

• make serve - pass
• make test - pass
• make autoflake isort black flake8 - pass
• make pylint - pass
• make smoketest - pass
• make doctest - pass