[4] Correctly re-translate the date/time string in the calendar based on language file

[PhilETaylor]

Pull Request for Issue #35204

Summary of Changes

Correctly re-translate the date/time string in the calendar based on language file

Also set the CORRECT en-GB value for the date/time string in PHP syntax DATE_FORMAT_CALENDAR_DATETIME as "%Y-%m-%d %H:%i:%s" - note this has been copied and pasted to other language packs and EVERY ONE will be broken... (Checked US and AU )

Testing Instructions

Install Joomla 4 with US language set as default
Try to create an article manually specifying a start publishing date and try to save

Actual result BEFORE applying this Pull Request

Expected result AFTER applying this Pull Request

Article Saves

Documentation Changes Required

[HLeithner]

%H:%M:%S is the wrong time... in all the packs I looked at (GB US AU)

- DATE_FORMAT_CALENDAR_DATETIME="%Y-%m-%d %H:%M:%S"
+ DATE_FORMAT_CALENDAR_DATETIME="%Y-%m-%d %H:%i:%s"

does the new calendar uses a different format? The value is 5 years old? #12102

[HLeithner]

Maybe this string is used later in php which it shouldn't?

[particthistle]

• en-GB error may have been in core string.
• en-AU and en-US were then a copy at that specific point in time.
• At the time I translated them, the date string did not have the code highlighting on it to indicate to translators "Don't change this one"