Revert "Member avatars without canvas" (#10057

* Revert "Apply more general fix for base avatar regressions (#10045)"

This reverts commit 371a3c0d36.

* Revert "Fix layout and visual regressions around default avatars (#10031)"

This reverts commit 0d1fce37b2.

* Revert "Member avatars without canvas (#9990)"

This reverts commit a8aa4de4b4.

* Update snapshots

res/css/structures/_SpacePanel.pcss

@@ -277,11 +277,14 @@ $activeBorderColor: $primary-content;
         .mx_BaseAvatar:not(.mx_UserMenu_userAvatar_BaseAvatar) .mx_BaseAvatar_initial {
             color: $secondary-content;
             border-radius: 8px;
+            background-color: $panel-actions;
+            font-size: $font-15px !important; /* override inline style */
             font-weight: $font-semi-bold;
             line-height: $font-18px;
-            /* override inline styles which are part of the default avatar style as these uses a monochrome style */
-            background-color: $panel-actions !important;
-            font-size: $font-15px !important;
+
+            & + .mx_BaseAvatar_image {
+                visibility: hidden;
+            }
         }
 
         .mx_SpaceTreeLevel {