Dates in header in week / day view do not respect locale

[louwers]

Steps to reproduce

1. Set locale to Netherlands
2. Go to calender, go to week view
3. Observe dates in top header

Expected behavior

ma 18-04-2022 | di 19-04-2022

etc.

Actual behaviour

Mon 4/18/2022 | Tue 4/19/2022 | Wed 4/20/2022 | Thu 4/21/2022 | Fri 4/22/2022 | Sat 4/23/2022 | Sun 4/24/2022

Calendar app version

3.0.6

CalDAV-clients used

No response

Browser

No response

Client operating system

No response

Server operating system

No response

Web server

No response

Database engine version

No response

PHP engine version

No response

Nextcloud version

20.0.14

Updated from an older installed version or fresh install

No response

List of activated apps

No response

Nextcloud configuration

No response

Web server error log

No response

Log file

No response

Browser log

No response

Additional info

No response

[louwers]

Could be that I am using an outdated version.

[tcitworld]

Looks similar to #2777