Change avatar to use Compound implementation (#11448)

* Move avatar to new compound implementation

* Make space avatars square

* Remove reference to the avatar initial CSS class

* remove references to mx_BaseAvatar_image

* Fixe test suites

* Fix accessbility violations

* Add ConfirmUserActionDialog test

* Fix tests

* Add FacePile test

* Fix items clipping in members list

* Fix user info avatar sizing

* Fix tests

res/css/views/dialogs/_ManageRestrictedJoinRuleDialog.pcss

@@ -66,11 +66,6 @@ limitations under the License.
                 flex-grow: 1;
             }
 
-            img.mx_RoomAvatar_isSpaceRoom,
-            .mx_RoomAvatar_isSpaceRoom img {
-                border-radius: 4px;
-            }
-
             .mx_ManageRestrictedJoinRuleDialog_entry_name {
                 margin: 0 8px;
                 font-size: $font-15px;
@@ -98,10 +93,6 @@ limitations under the License.
         .mx_BaseAvatar {
             margin-right: 12px;
         }
-
-        .mx_BaseAvatar_image {
-            border-radius: 8px;
-        }
     }
 
     .mx_ManageRestrictedJoinRuleDialog_section_info {