fix: display chinese character avatar

[Phreeman33]

• Resolves: First Character of Chinese or other multi-bytes characters display name  #45473
• Closes: feat: generate avatars for display name with chinese characters #42534

Summary

This PR builds upon #42534 for fixes an issue where Chinese character avatars were not displaying properly. It also applies fonts tailored to the regional variations in Chinese writing conventions. The code was modified by a noob and has only undergone basic testing, so further testing and review may be necessary.

Screenshots

\u89d2 in SC

\u89d2 in TC/HK/JP/KR

\u8005 in KR

\u8005 in SC/TC/HK/JP

\u8aaa in JP/KR

\u8aaa in SC/TC/HK

TODO

• ...

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)

[susnux]

@Phreeman33 could you please revert all other changes to keep the abstract getDisplayName method?
The only changes needed in this PR are:

• getFont
• generateAvatar
• the regular fonts

[Phreeman33]

@susnux
Done! Please review the code.

[github-actions]

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[skjnldsv]

@susnux anything else you think needs to be addressed ?

[susnux]

anything else you think needs to be addressed ?

@skjnldsv yes the psalm error was related. I fixed that one and now it should be fine.
Tested it also locally and it seems to work perfectly ✔️

[susnux]

@Phreeman33 thank you for your PR ✨