Multiblock Error Display Enhancement

[SoccyUwU]

Describe the feature you'd like

Currently the configurator displays various errors for a malformed multiblock. However, they could do with more convenience.
Especially the "Couldn't validate center" message: this should be reworded to something like "Invalid block inside structure found", as "center" implies the exact center of the structure.

For all of them which displays a coordinate, it would also be nice if the invalid block is highlighted in-world, in addition to the coordinate display.

In the best case scenario, all the invalid blocks could be highlighted at once.

Describe alternatives you've considered

Multiblocks destroy all invalid blocks on creation 🦖

Printing out the name of the block, which would require less work, but also wouldn't really help solving the convenience problem.

Additional context

Surely an immediate highlight of the offending block would greatly ease troubleshooting