Fix importing characters with names that contain foreign letters

[poyushih]

Fixes #8933

Ideally, we would want to display the non-ASCII chars properly. It seems to be a problem of fonts, which I'm uncertain how to fix now. This would at least allow characters with name containing non-ASCII characters to be imported to PoB.

Description of the problem being solved:

When importing data from POE with a character name containing non-ASCII characters, we will get a 400 error. This is due to the utf-8 encoding of those characters not being compatible with URL encoding.

Steps taken to verify a working solution:

• Find an account with non-ASCII character names on poe.ninja
• Try importing passives & items with a name containing non-ASCII characters

Link to a build that showcases this PR:

N/A

Before screenshot:

After screenshot:

[mmitch]

I can attest a successful test of this patch:

I ran into the same import problem with my character whose name contains a single single é (all other characters are plain ASCII).
With your patch applied to PoB 2.55.5 I can import the character again.
Thanks a a lot!

[Nightblade]

Tested OK with:

Egniel#3548 - РикиМортьевич
marchrabbit#7904 - 絲柯克是誰
PoeXa-7410 - 入丫长仈卄
DebbieDepot#2073 - Вернадский - นางกวัก - 이물담 - 殷海光
641775132#4121 - 乔家劲