[BUG] Different field used on blog article card

[MichelleJant]

Original conversation: https://notumcz.slack.com/archives/C04JKP19SHF/p1784215108963389

The meta description for any blog post is not displayed in the blog home page. What is displayed is the first introductory words of the blog post.

Todo:

• on blog articles card, used on blog pages (/blog, /blog[+category]) use the the first introductory