Removing MLS Added prefixes from listingId when displayed on results, detail pages

[spmiller2]

Of late, some MLSes have been prepending their traditional listingIds with prefixes as they merge with other systems and want to retain some local autonomy.

IDs that were historically, 123456 have ABC added to them so they're now ABC123456

However agents and local customers still speak to the listingIds being 123456 and would prefer to see the historical format on screen instead of the new ABC123456

The ask is to omit the new prefix on display and how the number as it was prior to the MLS change.

This is a display task, a similarly themed search task to remove the prefix from searches is recorded separately as #215