fix incoming call box

src/skins/vector/css/matrix-react-sdk/structures/_RoomView.scss

@@ -171,7 +171,7 @@ hr.mx_RoomView_myReadMarker {
 
     max-height: 0px;
     background-color: $primary-bg-color;
-    z-index: 1000;
+    z-index: 5;
     overflow: hidden;
 
     -webkit-transition: all .2s ease-out;
@@ -259,4 +259,4 @@ hr.mx_RoomView_myReadMarker {
 
 .mx_RoomView_ongoingConfCallNotification a {
     color: $accent-fg-color ! important;
-}
+}

src/skins/vector/css/matrix-react-sdk/views/voip/_IncomingCallbox.scss

@@ -25,6 +25,8 @@ limitations under the License.
     margin-top: -3px;
     margin-left: -20px;
     width: 200px;
+    font-weight: initial;
+    text-transform: initial;
 }
 
 .mx_IncomingCallBox_chevron {