Room details: improve members count UX (#1050)

* Inject user id into room’s details

* Refactor member fetch logic in RoomDetailsScreenViewModel

* Refactor DI

* Fetch members in RoomMembersListScreenViewModel

* Fetch members in InviteUsersScreen

* Use joinedMembersCount in room members list

* Cleanup

* Limit members refresh

* Cleanup binding

* Fix UT build errors

* Fix RoomDetailsScreenViewModelTests

* Fix RoomMembersListScreenViewModelTests

* Fix UTs

* Fix RoomDetailsScreenUITests

* Refine RoomDetailsScreenViewModelTests

* Add roomProxy extension

* PR comments

* Refactor room’s counter to Int

* Improve updateMembers() performances

* Fix memory leaks

ElementX/Sources/Screens/RoomMemberListScreen/View/RoomMembersListScreen.swift

@@ -26,7 +26,7 @@ struct RoomMembersListScreen: View {
         ScrollView {
             LazyVStack(alignment: .leading) {
                 membersSection(data: context.viewState.visibleInvitedMembers, sectionTitle: L10n.screenRoomMemberListPendingHeaderTitle)
-                membersSection(data: context.viewState.visibleJoinedMembers, sectionTitle: L10n.screenRoomMemberListHeaderTitle(context.viewState.joinedMembersCount))
+                membersSection(data: context.viewState.visibleJoinedMembers, sectionTitle: L10n.screenRoomMemberListHeaderTitle(Int(context.viewState.joinedMembersCount)))
             }
         }
         .searchable(text: $context.searchQuery, placement: .navigationBarDrawer(displayMode: .always))
@@ -80,8 +80,8 @@ struct RoomMembersListScreen_Previews: PreviewProvider {
             .mockBob,
             .mockCharlie
         ]
-        return RoomMembersListScreenViewModel(mediaProvider: MockMediaProvider(),
-                                              members: members)
+        return RoomMembersListScreenViewModel(roomProxy: RoomProxyMock(with: .init(displayName: "Some room", members: members)),
+                                              mediaProvider: MockMediaProvider())
     }()
     
     static var previews: some View {