fix: Multiple permission update toasts are spawned

[alexjba]

What does the PR do

Closes #13369

This behaviour is encountered only when updating the permissions in the channel edit popup because the community description is updated in 2 steps: 1 - Update the channel; 2 - update the permissions.

Flow:

1. Call channel update rpc
2. Call permission update rpc
3. Update the local permissions -> Emit permission created event
4. Receive the community description from step 1 (with older permissions) -> Emit permission deleted event + update the local permissions;
5. Receive the community description from step 2 (new permissions) -> Emit permission created event + update the local permission again

In this case the permissions updates are processed twice. Once when the permission update is called to the backend and the second time when the event for the new community description is received.

To fix this the permissions are not updated anymore when the backend rpc is called. The update happens only when the community description signal is received.

Affected areas

Community permissions

Screenshot of functionality (including design for comparison)

Screen.Recording.2024-02-15.at.23.18.50.mov

Cool Spaceship Picture

[status-im-auto]

Jenkins Builds

❔	Commit	#️⃣	Finished (UTC)	Duration	Platform	Result
✔️	e1b0fcf	#1	2024-02-15 21:34:49	~6 min	tests/nim	📄log
✔️	e1b0fcf	#1	2024-02-15 21:35:59	~7 min	macos/aarch64	🍎dmg
✔️	e1b0fcf	#1	2024-02-15 21:38:26	~9 min	macos/x86_64	🍎dmg
✔️	e1b0fcf	#1	2024-02-15 21:38:36	~10 min	tests/ui	📄log
✔️	e1b0fcf	#1	2024-02-15 21:44:52	~16 min	linux/x86_64	📦tgz
✔️	e1b0fcf	#1	2024-02-15 22:02:53	~34 min	windows/x86_64	💿exe

[caybro]

LGTM