Add user verification and verification state violation badges (#4392)

* Move `observeRoomMemberIdentityStateChange` and associated classes to `libs:matrixui` module so they can be reused

* Add `EncryptionService.getUserIdentity` method to retrieve not only if the user is verified or not, but in which state they are

* Fix `IdentityChangePresenter` after the previous changes

* Fix `withFakeLifecycleOwner` and add `testWithLifecycleOwner` helper

* Display verified badge in DM top app bar when possible

* Display a verification violation warning icon next to the 'People' item in room details screen

* Display either a verified badge or a verification violation warning icon next to the room members in the room member list screen

* Display either a verified badge or a verification violation warning and withdraw verification button in the room member profile.

Generic user profiles won't display verification state anymore since we can't easily track changes in it.

* Add preview for room member details screen with verification violation identity state

* Add verified and violation badge to the `Profile` list item in room details screen

* Update screenshots

---------

Co-authored-by: ElementBot <android@element.io>

libraries/matrixui/src/main/kotlin/io/element/android/libraries/matrix/ui/room/ObserveRoomMemberIdentityStateChange.kt

@@ -0,0 +1,89 @@
+/*
+ * Copyright 2025 New Vector Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+ * Please see LICENSE files in the repository root for full details.
+ */
+
+package io.element.android.libraries.matrix.ui.room
+
+import androidx.compose.runtime.ProduceStateScope
+import io.element.android.libraries.designsystem.components.avatar.AvatarData
+import io.element.android.libraries.designsystem.components.avatar.AvatarSize
+import io.element.android.libraries.matrix.api.core.UserId
+import io.element.android.libraries.matrix.api.encryption.identity.IdentityState
+import io.element.android.libraries.matrix.api.room.MatrixRoom
+import io.element.android.libraries.matrix.api.room.RoomMember
+import io.element.android.libraries.matrix.api.room.roomMembers
+import io.element.android.libraries.matrix.ui.model.getAvatarData
+import kotlinx.collections.immutable.ImmutableList
+import kotlinx.collections.immutable.PersistentList
+import kotlinx.collections.immutable.toPersistentList
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.distinctUntilChanged
+import kotlinx.coroutines.flow.filter
+import kotlinx.coroutines.flow.flatMapLatest
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onEach
+
+@OptIn(ExperimentalCoroutinesApi::class)
+fun MatrixRoom.roomMemberIdentityStateChange(): Flow<ImmutableList<RoomMemberIdentityStateChange>> {
+    return syncUpdateFlow
+        .filter {
+            // Room cannot become unencrypted, so we can just apply a filter here.
+            isEncrypted
+        }
+        .distinctUntilChanged()
+        .flatMapLatest {
+            combine(identityStateChangesFlow, membersStateFlow) { identityStateChanges, membersState ->
+                identityStateChanges.map { identityStateChange ->
+                    val member = membersState.roomMembers()
+                        ?.find { roomMember -> roomMember.userId == identityStateChange.userId }
+                        ?.toIdentityRoomMember()
+                        ?: createDefaultRoomMemberForIdentityChange(identityStateChange.userId)
+                    RoomMemberIdentityStateChange(
+                        identityRoomMember = member,
+                        identityState = identityStateChange.identityState,
+                    )
+                }.toPersistentList()
+            }.distinctUntilChanged()
+        }
+}
+
+fun ProduceStateScope<PersistentList<RoomMemberIdentityStateChange>>.observeRoomMemberIdentityStateChange(room: MatrixRoom) {
+    room.roomMemberIdentityStateChange()
+        .onEach { roomMemberIdentityStateChanges ->
+            value = roomMemberIdentityStateChanges.toPersistentList()
+        }
+        .launchIn(this)
+}
+
+private fun RoomMember.toIdentityRoomMember() = IdentityRoomMember(
+    userId = userId,
+    displayNameOrDefault = displayNameOrDefault,
+    avatarData = getAvatarData(AvatarSize.ComposerAlert),
+)
+
+private fun createDefaultRoomMemberForIdentityChange(userId: UserId) = IdentityRoomMember(
+    userId = userId,
+    displayNameOrDefault = userId.extractedDisplayName,
+    avatarData = AvatarData(
+        id = userId.value,
+        name = null,
+        url = null,
+        size = AvatarSize.ComposerAlert,
+    ),
+)
+
+data class RoomMemberIdentityStateChange(
+    val identityRoomMember: IdentityRoomMember,
+    val identityState: IdentityState,
+)
+
+data class IdentityRoomMember(
+    val userId: UserId,
+    val displayNameOrDefault: String,
+    val avatarData: AvatarData,
+)