fix passing an mxc to expandableimage

lib/widgets/room_appbar.dart

@@ -1,7 +1,9 @@
 import "package:fast_immutable_collections/fast_immutable_collections.dart";
 import "package:flutter/material.dart";
 import "package:hooks_riverpod/hooks_riverpod.dart";
+import "package:nexus/controllers/client_state_controller.dart";
 import "package:nexus/controllers/selected_room_controller.dart";
+import "package:nexus/helpers/extensions/mxc_to_https.dart";
 import "package:nexus/widgets/appbar.dart";
 import "package:nexus/widgets/avatar_or_hash.dart";
 import "package:nexus/widgets/expandable_image.dart";
@@ -29,7 +31,15 @@ class RoomAppbar extends ConsumerWidget implements PreferredSizeWidget {
           ? room == null
                 ? null
                 : ExpandableImage(
-                    room.metadata?.avatar?.toString(),
+                    room.metadata?.avatar
+                        ?.mxcToHttps(
+                          ref.watch(
+                            ClientStateController.provider.select(
+                              (value) => value!.homeserverUrl!,
+                            ),
+                          ),
+                        )
+                        .toString(),
                     child: AvatarOrHash(
                       room.metadata?.avatar,
                       room.metadata?.name ?? "Unnamed Rooms",

lib/widgets/user_popover.dart

@@ -9,6 +9,7 @@ import "package:nexus/controllers/profile_controller.dart";
 import "package:nexus/controllers/selected_room_controller.dart";
 import "package:nexus/helpers/extensions/better_when.dart";
 import "package:nexus/helpers/extensions/get_localpart.dart";
+import "package:nexus/helpers/extensions/mxc_to_https.dart";
 import "package:nexus/models/configs/power_level_config.dart";
 import "package:nexus/models/content/membership.dart";
 import "package:nexus/models/membership_status.dart";
@@ -91,7 +92,15 @@ class UserPopover extends ConsumerWidget {
           runSpacing: 8,
           children: [
             ExpandableImage(
-              member.avatarUrl?.toString(),
+              member.avatarUrl
+                  ?.mxcToHttps(
+                    ref.watch(
+                      ClientStateController.provider.select(
+                        (value) => value!.homeserverUrl!,
+                      ),
+                    ),
+                  )
+                  .toString(),
               child: AvatarOrHash(
                 member.avatarUrl,
                 member.displayName ?? userId.localpart,