[Wasm] PasswordBox.PasswordChar support

[jeromelaban]

Questions about password display characters not being supported and additional questions when applying Korean fonts (migrating from a project-specific platform to a single-project platform)

Question 1) ● PasswordBox is not displayed in Wasm. There is no problem with previous Skia, mobile platforms, and current single project desktop platforms (#eaded92).

Windows

Wasm

Desktop

Originally posted by @luckypong in #17236

[jeromelaban]

Thanks for the report. This issue has multiple aspects. The fact that the browser does not show the character in that font is most likely out of our control, but you should be able to change the character by using PasswordChar which does not seem to work properly at this time.

This is something that can be fixed.

[luckypong]

Password characters are displayed in the pixel android 31 emulator.
Password characters are not displayed on Galaxy Z Fold 5 Android 34.
What kind of problem is it?

[jeromelaban]

@luckypong uno uses the Android APIs for displaying content, the best way to address this is to use PasswordChar to one that works with your font.

[luckypong]

@jeromelaban

Unintended consequences?
PasswordBox ● Characters are displayed normally.

Currently ms-appx:///Assets/~
Use not_win:FontFamily="XamlAutoFontFamily"
PasswordBox ● Displays characters.