[Functionality] the `published date` field on `blog-post` page context should follow proper design and comms best practices, needs improvements

Problem

The published date field currently reads as Posted 22 July 2023. There are many ways this can be improved and re-explored.

The use of Posted at the beginning is likely redundant
IF a prefix is necessary published or pub. fits better
the case of a prefix being uppercase disrupts visual flow to the date itself and should perhaps be lowercase.
The date format is part of a comms message in this usecase, it is not a technical standard, code, or a value stored within a database. As such it should follow good international comms messaging formatting and order, not necessarily good technical standards for formats as the two contexts differ greatly.