[Improvement]: Replace usages of strftime and Carbon::formatLocalized()

[kingjia90]

Improvement description

src: https://www.php.net/manual/en/function.strftime.php

Needs to deprecate and replace the format parameters, they are not interchangeable with the replacement, for example %a cannot be just a

see also #14431 (comment)

[kingjia90]

Needs to deprecate and replace the format parameters, they are not interchangeable with the replacement, for example %a cannot be just a

Mostly done but for data hub file export and ecommerce framework the challenge is how to tackle this without BC breaks
https://github.com/pimcore/ecommerce-framework-bundle/blob/d75b6a6e52be1d3635ef2fc435082794becc88a4/src/OrderManager/V7/OrderManager.php#L603

We could map the former formats and translate to the desired format, strftime ones are always prefixed by % and are one character BUT carbon ISO have no prefix and have a variable length making it hard to distinguish text from parameter, so we may introduce some "meta-symbols" to tag them, eg.today is *dd*.xls) and skip this "translator" when *anything* are found or do it once via a migration(?).

see
https://carbon.nesbot.com/docs/#api-localization:~:text=to%20Sa)%2C%20translatable-,ddd,-Thu

Alternatively, creating a new config for existing config fields and deprecate the current one, and use the new one when is set.

Another input would be introducing something more custom (instead of *dd* to *MIN_DAY_NAME_T* or *MDNT*) and properly documented, that we can limit and have more control on, because we actually don't/shouldn't support every date format parameter, eg. strftime('today is %D.xls', time()); results in a date with forward slashes (which is forbidden for filenames) as m/d/Y.