send button: use autoMirrored for proper RTL diaplay

Change-Id: Iaee0a2aa775cb5ec2447d4c1b7c70bc980f66368

jami-android/app/src/main/res/drawable/baseline_send_24.xml

 <vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportWidth="24.0"
-        android:viewportHeight="24.0"
-        android:tint="?attr/colorControlNormal">
+    android:width="24dp"
+    android:height="24dp"
+    android:autoMirrored="true"
+    android:tint="?attr/colorControlNormal"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
     <path
         android:fillColor="@android:color/white"
-        android:pathData="M2.01,21L23,12 2.01,3 2,10l15,2 -15,2z"/>
+        android:pathData="M2.01,21L23,12 2.01,3 2,10l15,2 -15,2z" />
 </vector>