Break interactivity with underlying blocks in the backoffice

[mlebretonFR]

Feature summary

For example, inside block-grid-preview :

• set pointer-events to none for <a aria-label="Edit block" role="button"...> </a>.
• set pointer-events to all for umb-block-grid-areas-container.

This prevents the interactivity with the underlying blocks (click, mouse over,...). But keeps interactivity with the areas inside a block. This is important when your blocks are CustomElements and expect some behaviour in the front-end, but not in the back-office.

Thanks.

Additional details

No response