Short date culture fix

[digitaldirk]

Previously were hardcoded to .ToString("dd/MM/yyyy") which could be confusing for some users.

For example: currently a date would show: 02/09/2024, but now it would show as 9/2/2024 for the en-US culture

[linkdotnet]

Thanks for the PR @digitaldirk !

Two small things:

1. The Archive-Page also has some date handling. To be aligned, the change has to be made there as well.
2. (Have to check later on my machine, just a hunch): The Unit tests (that involve dates) might break now as they don't have any culture set. That would be probably a good idea.

[digitaldirk]

I will make some more changes and sorry I should have been more proactive on the tests (quickly did this PR on web)

[linkdotnet]

Nahhh don’t worry - given that all tests are green, they had some implicit assumptions or behavior.

[digitaldirk]

ShouldPublishScheduledBlogPosts failed but that also fails on a fresh pull of master branch.

Think I'm all done :)

[linkdotnet]

ShouldPublishScheduledBlogPosts I guess it doesn't fail on CI because of invariant culture.

[linkdotnet]

Thanks for your efforts - I will merge the PR