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>

ElementX/Sources/Screens/RoomScreen/ComposerToolbar/CompletionSuggestionService.swift

@@ -47,9 +47,7 @@ final class CompletionSuggestionService: CompletionSuggestionServiceProtocol {
                 self?.suggestionTriggerSubject.value != nil ? .milliseconds(500) : .milliseconds(0)
             }
         
-        Task {
-            canMentionAllUsers = await (try? roomProxy.powerLevels().get().canUserTriggerRoomNotification(userID: roomProxy.ownUserID).get()) == true
-        }
+        canMentionAllUsers = (try? roomProxy.infoPublisher.value.powerLevels.canUserTriggerRoomNotification(userID: roomProxy.ownUserID).get()) == true
     }
     
     func processTextMessage(_ textMessage: String, selectedRange: NSRange) {