Message from the leads is not shown anywhere in Subspace (add to layout)

[SimoneZaza]

Describe the bug
We still have the functionality to write an "update from the lead". However, this message is currently only shown in the admin section. The notification shows a button to "Have a look" but this brings the user to the (sub)space where nothing is shown.

To Reproduce
Steps to reproduce the behavior:

1. Create update from the leads in subspace, see that it's only visible in the settings

Expected behavior
Add same block as on Space on Subspace (l1+2), below Space hierarchy

[bobbykolev]

As I was completing a PR in that area, I'll use the opportunity to pick this up.

[Comoque1]

Tested OK on Local Env: