userProfile removed from Global singleton

[micieslak]

What does the PR do

This PR is a series of commits leading to removal of userProfile property from Global.qml. It's part of broader effort aiming making singletons stateless and backend-independent.

• isDisplayNameDupeOfCommunityMember moved from Utils singleton to CommunitiesStore as it calls backend
• display name validators moved from Constants to a dedicated component, explicitly dependent on a store. It makes Constant holding really read-only, immutable data, with no references to the backend.
• ContactsStore.getProfileContext simplified, no need to provide user's own public key
• UserStatusContextMenu made purely UI component, actions handling externalized
• ProfileHeader made backend-independent and behavior improved - after removing icon (in a dirty state) the menu entry for removing image is not available (earlier was available and did nothing when clicked)
• sendModalPopup removed from ProfileSectionStore
• several direct references to userProfile context property removed from UI code
• unused PopupMenu removed

Closes: #16459

Affected areas

Multiple components, mainly those using Global.userProfile

Architecture compliance

• I am familiar with the application architecture and agreed good practices.
  My PR is consistent with this document: Status Desktop Architecture Guide

[status-im-auto]

Jenkins Builds

❔	Commit	#️⃣	Finished (UTC)	Duration	Platform	Result
✔️	22ab20c	#1	2024-10-16 08:49:04	~6 min	macos/aarch64	🍎dmg
✔️	22ab20c	#1	2024-10-16 08:49:12	~7 min	tests/nim	📄log
✔️	22ab20c	#1	2024-10-16 08:54:28	~12 min	tests/ui	📄log
✔️	22ab20c	#1	2024-10-16 08:58:06	~16 min	linux-nix/x86_64	📦tgz
✔️	22ab20c	#1	2024-10-16 08:58:56	~16 min	macos/x86_64	🍎dmg
✔️	22ab20c	#1	2024-10-16 09:00:58	~18 min	linux/x86_64	📦tgz
✔️	22ab20c	#1	2024-10-16 09:06:38	~24 min	windows/x86_64	💿exe

[caybro]

LGTM otherwise

[caybro]

LGTM

[jrainville]

LGTM