New right panel visual language (#11664)

* New right panel visual language

* Upgrade Compound

* Align old room header with right panel

* Rigth panel look and feel

* Fix linting and e2e tests

* Update snapshot

* Add test

* Lint

* Remove screenshot local script

* Update snapshots and UI based on feedback

* fix i18n key

* Update right panel visuals

* Fix tests

* lintfixes

* fix tests

* fix tests

* Add tests for search icon

* Fix invite dialog spec

res/css/structures/_RightPanel.pcss

@@ -21,8 +21,7 @@ limitations under the License.
     position: relative;
     display: flex;
     flex-direction: column;
-    border-radius: 8px;
-    padding: var(--container-border-width) 0;
+    border-left: 1px solid $separator;
     box-sizing: border-box;
     height: 100%;
     contain: strict;