No YouTube Shorts (Replace with video) — Vidit

This is a simple extension can redirect you to a standard YouTube video UI for shorts by replacing the page location to the video URL with the short id.
Perhaps it would've been more useful in the past when the shorts UI lacked some functionalities, but you may still prefer the standard video UI instead of that of the new shorts page, especially for longer shorts.

There are two modes available:
1) Manual (default mode): Provides a button in the extension window which can be clicked to switch to the video.
2) Automatic (works, but less reliable): Inserts a script to the page, which automatically replaces the its location with the matching video URL
The modes can changed through the extension pop up window.