The multi-component menu should disappear after the group button is clicked

[AdRiley]

The multi-component menu should disappear after the group button is clicked as once you have grouped there are no longer multiple components selected.

Actual:

Expected: The multi-component menu should disappear

[farmaazon]

Interesting. Looks really like we still have those nodes selected, somehow.

[farmaazon]

There should another list of "actually selected" nodes (the current selection, with non-existing nodes filtered out) - a computed value. There are some places in code where we already do that - unify them.

[enso-bot[bot]]

Keziah Wesley reports a new STANDUP for today (2024-05-10):

Progress: Fixed issues with selection containing components that don't exist. It should be finished by 2024-05-10.

Next Day: Next day I will be working on the #9907 task. Work on doc editor link handling