feat(chat): Add toasts to various quickprofile actions

[Flemmli97]

What this PR does 📖

• Adds various toast notification that were missing for various quickprofile notifications like sending friend request, blocking etc.
• Display "Unknown" if the identity couldn't be resolved

This potentially should solve #1833.
For the overlapping part it should be resolved with the Unknown name.
Not too sure about the actions. Maybe they did work in the issue but due to lack of feedback which should be solved via the toasts now it gave the illusion it didn't.

[github-actions]

UI Automated Test Results Summary for MacOS/Windows

507 tests   447 ✅  3h 0m 56s ⏱️
 44 suites   60 💤
  3 files      0 ❌

Results for commit 4de9f86.

♻️ This comment has been updated with latest results.

[github-actions]

UI Automated Tests execution is complete! You can find the test results report here

[phillsatellite]

Sara and I noticed if you block someone you are already friends with no toast will appear. If you block someone who you are not friends with toast will appear

Removing someone I am not friends with

toast.mov

Removing someone I am friends with

no.toast.mov

[Flemmli97]

Sara and I noticed if you block someone you are already friends with no toast will appear. If you block someone who you are not friends with toast will appear

Removing someone I am not friends with

toast.mov

Removing someone I am friends with

no.toast.mov

if you are in a dm it and block someone via this the chat will close causing the component to unmount and thus unable to send a toast.

after some discussions in the meeting though it should be fine to ignore this case as the chat closing is enough of user feedback and doesn't require a toast