Integrate with navigation

Needs to define something like

.toolbar-link--dashboard::before {
+  --icon: url("data:image/svg+xml,%3csvg width='24' height='24' viewBox='0 0 24 24' fill='none' xmlns='http://www.w3.org/2000/svg'%3e  %3cpath d='M19.5 3H7.5C7.10218 3 6.72064 3.15804 6.43934 3.43934C6.15804 3.72064 6 4.10218 6 4.5V6H4.5C4.10218 6 3.72064 6.15804 3.43934 6.43934C3.15804 6.72064 3 7.10218 3 7.5V19.5C3 19.8978 3.15804 20.2794 3.43934 20.5607C3.72064 20.842 4.10218 21 4.5 21H16.5C16.8978 21 17.2794 20.842 17.5607 20.5607C17.842 20.2794 18 19.8978 18 19.5V18H19.5C19.8978 18 20.2794 17.842 20.5607 17.5607C20.842 17.2794 21 16.8978 21 16.5V4.5C21 4.10218 20.842 3.72064 20.5607 3.43934C20.2794 3.15804 19.8978 3 19.5 3ZM7.5 4.5H19.5V11.0044L17.9344 9.43875C17.6531 9.15766 17.2717 8.99976 16.8741 8.99976C16.4764 8.99976 16.095 9.15766 15.8137 9.43875L8.75344 16.5H7.5V4.5ZM16.5 19.5H4.5V7.5H6V16.5C6 16.8978 6.15804 17.2794 6.43934 17.5607C6.72064 17.842 7.10218 18 7.5 18H16.5V19.5ZM19.5 16.5H10.875L16.875 10.5L19.5 13.125V16.5ZM11.25 10.5C11.695 10.5 12.13 10.368 12.5 10.1208C12.87 9.87357 13.1584 9.52217 13.3287 9.11104C13.499 8.6999 13.5436 8.2475 13.4568 7.81105C13.37 7.37459 13.1557 6.97368 12.841 6.65901C12.5263 6.34434 12.1254 6.13005 11.689 6.04323C11.2525 5.95642 10.8001 6.00097 10.389 6.17127C9.97783 6.34157 9.62643 6.62996 9.37919 6.99997C9.13196 7.36998 9 7.80499 9 8.25C9 8.84674 9.23705 9.41903 9.65901 9.84099C10.081 10.2629 10.6533 10.5 11.25 10.5ZM11.25 7.5C11.3983 7.5 11.5433 7.54399 11.6667 7.6264C11.79 7.70881 11.8861 7.82594 11.9429 7.96299C11.9997 8.10003 12.0145 8.25083 11.9856 8.39632C11.9567 8.5418 11.8852 8.67544 11.7803 8.78033C11.6754 8.88522 11.5418 8.95665 11.3963 8.98559C11.2508 9.01453 11.1 8.99968 10.963 8.94291C10.8259 8.88614 10.7088 8.79001 10.6264 8.66668C10.544 8.54334 10.5 8.39834 10.5 8.25C10.5 8.05109 10.579 7.86032 10.7197 7.71967C10.8603 7.57902 11.0511 7.5 11.25 7.5Z' fill='currentColor'/%3e%3c/svg%3e");
+}

So might need a css alter?

This patch will be required for core until we figure out 📌 Provide a way for other modules to flag block plugin implementations as 'navigation safe' Active .

w00t

https://www.drupal.org/project/drupal/issues/3438895#comment-15574276 ✨ Add the new Navigation to core as an Experimental module Fixed

It landed on 10.3.x, so we shouldn't need the tugboat magic.

Also maybe using 10.3.x makes tests pass again, which I'm not sure why they would fail here.

Attached rerolled patch for navigation

Attached new patch that should fix schema issues in tests.

It looks great!
Moving to RTBC

Merged, thanks!

For 10.3.x the patch for core would be this one

Automatically closed - issue fixed for 2 weeks with no activity.

For 10.4.x the patch for core would be this one

Re-rolled for 11.x

Re-rolled for 10.4.x

Rerolled again for 11.x.

Rerolled again for 11.x after NavigationHooks has been created.

Yet another reroll on 11.x.