Add the anti-hang slot template for the user if they have lists in the cells

[evnchn]

Motivation

Fixes #2744 for good, in which row values being lists cause Vue to grind to a halt.

Implementation

Contrast to #4694 this PR's approach is to:

1. Apply the slot template which ceases the hanging for the user (Browser can't load page when table rows contain lists #2744 (comment))
2. Informs the user they better change their code or they must live with console warnings.

Not discovering this solution earlier was caused by how the discussion was spread in multiple places and that the comment is hidden by "show more items"

Progress

• I chose a meaningful title that completes the sentence: "If applied, this PR will..."
• The implementation is complete.
• Pytests are not necessary.
• Documentation is not necessary.