UI: decode unicode properly in log page

[kybin]

unicode logs in log page are not showing properly currently.

with a little research I found this.

https://stackoverflow.com/a/30106551/1932530

I checked it and for me it works, please confirm.

[DingoEatingFuzz]

Hi @kybin, thank you for your contribution! I tested this out and I am happy to merge it.

I do want to give you a heads up, however. As part of the Exec UI (#6697), we added a proper third-party text encoding library. I plan on updating this log streaming code to use the same library which will replace what you have added here. But your contribution will forever be in the git log!

[kybin]

@DingoEatingFuzz Thank you for your consideration and explanation. I agree that handling with a complete library will be a better option. :)

[github-actions]

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