Add correct margin to in-call menu item.

app/src/main/res/layout/show_participants_menu_view.xml

@@ -7,6 +7,8 @@
     android:background="?attr/selectableItemBackground"
     android:gravity="center"
     android:minWidth="48dp"
+    android:paddingStart="16dp"
+    android:paddingEnd="16dp"
     android:orientation="horizontal"
     tools:background="@color/core_ultramarine">
 

app/src/main/res/layout/webrtc_call_view_toolbar.xml

@@ -3,7 +3,8 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
-    android:layout_height="wrap_content">
+    android:layout_height="wrap_content"
+    tools:menu="@menu/group_call">
 
     <androidx.constraintlayout.widget.ConstraintLayout
         android:layout_width="240dp"