Adopt room info power levels (#4245)

* Use the newly RoomInfo published PowerLevels; update permissions at the same time as the room info and avoid unnecessary async calls.

* Introduce a RoomInfoProxyProtocol and associated mock and move away from mocked SDK RoomInfos

* Bump the SDK to v25.06.23

* Expose new non-throwing methods for checking one's own user permissions

* Fix the unit and preview tests (except the TimelineMediaPreviewDetails for which simplified snapshots were generated)

* Converge on one single implementation for computing a room's avatar.

* Fix more unit tests

* Fix the TimelineMediaPreviewDetailsView snapshot tests

This reverts commit 9b6c819e611ad2fa3de2c34a4a7aa556fc9faadd.

---------

Co-authored-by: Doug <douglase@element.io>

UnitTests/Sources/RoomFlowCoordinatorTests.swift

@@ -274,7 +274,7 @@ class RoomFlowCoordinatorTests: XCTestCase {
         var configuration = JoinedRoomProxyMockConfiguration()
         let roomProxy = JoinedRoomProxyMock(configuration)
         
-        let roomInfoSubject = CurrentValueSubject<RoomInfoProxy, Never>(.init(roomInfo: .init(configuration)))
+        let roomInfoSubject = CurrentValueSubject<RoomInfoProxyProtocol, Never>(RoomInfoProxyMock(configuration))
         roomProxy.infoPublisher = roomInfoSubject.asCurrentValuePublisher()
         
         clientProxy.roomForIdentifierClosure = { _ in
@@ -288,7 +288,7 @@ class RoomFlowCoordinatorTests: XCTestCase {
         }
         
         configuration.membership = .left
-        roomInfoSubject.send(.init(roomInfo: .init(configuration)))
+        roomInfoSubject.send(RoomInfoProxyMock(configuration))
         
         try await fulfillment.fulfill()
     }