Issues with the Accessibility Narrator in non-English languages

Description

I've done some tests of the Accessibility Narrator on Windows 10, with Spanish (Spain) Cortana, and I've found a couple of minor issues.

Expected behavior

When moving the menu to a menu line that contains accented characters, the narrator should read them properly, reading stuff like "Energía" or "Listas de reproducción".

When reading a Settings function that has an On/Off switch, the switch should read something like, "Accessibilidad activado" or, hopefully, "Accessibilidad activada".

When the Narrator reads a long Setting, it should read each element with a punctuation separator, like a comma or a colon. "Ajustes, Interfaz de usuario, Vistas"

Actual behavior

When moving the menu to a menu line that contains accented characters, the narrator doesn't identify them properly, reading "Energía" as "Energa" or "Listas de reproducción" as "Listas de reproducc-superíndice3 (note: that's ³)-n". Seems like there's a text encoding issue.

Also, when reading a Settings function that has an On/Off switch, the switch is read in English, as on or off, instead of using a translatable equivalent.

Reading a long Settings line will cause the Narrator to read it like it's a long, unpunctuated line. "Ajustes interfaz de usuario vistas".

Steps to reproduce the bug

1. Use Windows 10 with Cortana in a non-English setup.
2. Boot RetroArch with the corresponding language.
3. Enable the Accessibility Enable feature.
4. Make Cortana read a line that has accented characters or an On/Off toggle.

Bisect Results

Version/Commit

• RetroArch: 1.8.2 stable

Environment information

• OS: Windows 10 Pro x64, Spanish language, ver 1809

Additional comments

If you want to avoid the huge can of worms that is adding a custom on/off line per option line and per language to make sure each setting has the properly gendered, you could make the Narrator say something like: "Setting: Setting Enabled/Disabled". For example, "Accessibility Enable: Setting Enabled".

The report names no files, tests, or implementation entry points. Start by reproducing the Spanish Windows 10 case with Accessibility Enable and the Narrator, then locate the code handling accented text, translated On/Off labels, and punctuation in long Settings lines. Done means those three behaviors are corrected without regressing English output.