User verification state indicators (#3793)

* Introduce a `UserIdentityProxy` and have it combine upstream methods into an easy to digest  `UserIdentityVerificationState`. Use it in a dedicated `VerificationBadge` UI component

* Show a DMs counterpart verification state in the room header

* Show a warning on the room details `People` entry when there are identity verification state violations on any of the members.

* Show verification badges in the room member list

* Show a withdraw verification section on the room member details for users that have pinning violations.

* Remove the verification section from the profile screen as there's no reliable way to keep it up to date
- the underlying Rust SDK Olm Machine can be rebuilt without notice which would break any existing user identity change streams.

* Update preview test snapshots

ElementX/Sources/Services/Users/UserIdentityProxy.swift

@@ -0,0 +1,26 @@
+//
+// 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.
+//
+
+import MatrixRustSDK
+
+class UserIdentityProxy: UserIdentityProxyProtocol {
+    private let userIdentity: UserIdentity
+    
+    init(userIdentity: UserIdentity) {
+        self.userIdentity = userIdentity
+    }
+    
+    var verificationState: UserIdentityVerificationState {
+        if userIdentity.hasVerificationViolation() {
+            return .verificationViolation
+        } else if userIdentity.isVerified() {
+            return .verified
+        }
+        
+        return .notVerified
+    }
+}