[BUG]: Mismatch between displayed time and real-time on Blog page

Describe the bug

There is a discrepancy between the time displayed on blog posts and the actual real-time clock.

URL of the page where the issue is observed.

http://localhost:8181/blog-dashboard

Steps To Reproduce

Log in to the Oppia admin/blog dashboard.

Create a new blog post

Fill in the required fields

Publish the post

Refresh and Observe the timestamp

Compare the displayed timestamp with your actual publication time.

Expected Behavior

The timestamp should accurately reflect the moment of publication, ideally converted to the user's local timezone or clearly labeled as UTC.

Screenshots/Videos

https://github.com/user-attachments/assets/69b9dc42-922a-4302-925f-a95a3b7d5e6d

What device are you using?

Desktop

Operating System

Linux

What browsers are you seeing the problem on?

No response

Browser version

No response

Additional context

No response

Tips for developers

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Then, please leave a comment with details of the approach that you plan to take to fix the issue (see example).

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