fix(contactsmenu): restore avatars for non-user contacts

The contacts menu never passed the avatar URL to NcAvatar for non-user
contacts and bound the display name to a non-existent `avatarLabel`
field, so plain address-book contacts rendered the "?" fallback. User
contacts kept working because they resolve their avatar via the `user`
prop instead.

Pass `contact.avatar` as the avatar URL for non-user contacts and use
`contact.fullName` for the initials fallback, matching the behaviour
before the binding was dropped.

Assisted-by: ClaudeCode:claude-opus-4-8
Signed-off-by: Christoph Wurst <1374172+ChristophWurst@users.noreply.github.com>

Author: ChristophWurst

core/src/components/ContactsMenu/ContactMenuEntry.vue

@@ -10,7 +10,8 @@
 			:user="contact.isUser ? contact.uid : undefined"
 			:is-no-user="!contact.isUser"
 			:disable-menu="true"
-			:display-name="contact.avatarLabel"
+			:display-name="contact.fullName"
+			:url="contact.isUser ? undefined : contact.avatar"
 			:preloaded-user-status="preloadedUserStatus" />
 		<a
 			class="contact__body"

core/src/tests/components/ContactsMenu/ContactMenuEntry.spec.js

@@ -5,9 +5,51 @@
 
 import { shallowMount } from '@vue/test-utils'
 import { describe, expect, it } from 'vitest'
+import NcAvatar from '@nextcloud/vue/components/NcAvatar'
 import ContactMenuEntry from '../../../components/ContactsMenu/ContactMenuEntry.vue'
 
 describe('Contact', function() {
+	it('passes the avatar url to non-user contacts', () => {
+		const view = shallowMount(ContactMenuEntry, {
+			propsData: {
+				contact: {
+					id: '11111111-2222-3333-4444-555555555555',
+					uid: '11111111-2222-3333-4444-555555555555',
+					fullName: 'Jane Doe',
+					avatar: 'https://localhost/remote.php/dav/addressbooks/users/admin/contacts/jane.vcf?photo',
+					isUser: false,
+					emailAddresses: [],
+					actions: [],
+				},
+			},
+		})
+
+		const avatar = view.findComponent(NcAvatar)
+		expect(avatar.props('user')).toBeUndefined()
+		expect(avatar.props('url')).toBe('https://localhost/remote.php/dav/addressbooks/users/admin/contacts/jane.vcf?photo')
+		expect(avatar.props('displayName')).toBe('Jane Doe')
+	})
+
+	it('lets user contacts resolve the avatar via their user id', () => {
+		const view = shallowMount(ContactMenuEntry, {
+			propsData: {
+				contact: {
+					id: 'jane',
+					uid: 'jane',
+					fullName: 'Jane Doe',
+					avatar: 'https://localhost/remote.php/dav/addressbooks/system/system/system/jane.vcf?photo',
+					isUser: true,
+					emailAddresses: [],
+					actions: [],
+				},
+			},
+		})
+
+		const avatar = view.findComponent(NcAvatar)
+		expect(avatar.props('user')).toBe('jane')
+		expect(avatar.props('url')).toBeUndefined()
+	})
+
 	it('links to the top action', () => {
 		const view = shallowMount(ContactMenuEntry, {
 			propsData: {