Using different locale doesn't change day translation

[JLNNN]

Describe the bug If I use a different locale, I'm expecting the days of the week (Mo-Su) to be translated.

To Reproduce Steps to reproduce the behavior:

1. installed npm packages as required
2. setup everything as described in docs
3. Use different locale (for example: de)

       datePickerOptions = {
           locale: deLocale
       }

4. Click on datepicker input field
5. See error

Expected behavior The overlay uses localized translations for the days. Example de (German): Mo = Mo Tu = Di We = Mi Th = Do Fr = Fr Sa = Sa Su = So

Versions (please complete the following information):

• OS: macOS Mojave
• Browser: Chrome 84.0.4147.135
• Package Version [e.g. 1.2.3]: 8.0.6 (tried ^8.0.0)
• Angular Version [e.g. 7.x]: 10

[JLNNN]

After trying and debugging different things, the following is working:

public datePickerOptions: DatePickerOptions = {
        locale: {locale: de},
        // ...
}