what encoding does Chromium 126 show?

the script file contains Russian comments. Notepad shows UNICODE , i.e. UTF-8.

This encoding has been adopted since 1992. And it should replace all other anachronisms.

Here is the result of displaying this script file in the browser

const { numValue, unit } = getVolUnit("150px"); // �㘵匾煩棣菩銑觧菩� �箮解�郅郋赲��� �箮參���� 邽 �耨請解��� 

Question:

1. Which of the ancient encodings does Chromium 126 still use?

2. When will it end?

I dont know , what is encoding show browser.

The whole world should have switched to UNICODE for 22 years ago. I am waiting for Chromium representatives