Fix post time localization on Android

[auroursa]

Fix #6728

It seems that the post date localization on Android is handled differently from Web and iOS. In some cases, this may cause the date localization to not work properly on Android. Here are some examples:

Before

Japanese (Web)

Chinese (Web)

Android

Chinese	Japanese

For Chinese, this date format is like rolling back to English, so it needs to be changed. At the very least, it should match the date format used on the web. The example after the fix:

After

Android

Chinese	Japanese