Messaging: Use Start and End instead of Left and Right

That way we don't need a separate file for these styles anymore

Change-Id: If689fba727f9b678b628c7bfb51fa8e4474d68de

res/layout/widget_message_item_outgoing.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!--
     Copyright (C) 2015 The Android Open Source Project
-    Copyright (C) 2024 The LineageOS Project
+    Copyright (C) 2024-2025 The LineageOS Project
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
@@ -22,8 +22,8 @@
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:paddingBottom="8dp"
-    android:paddingLeft="8dip"
-    android:paddingRight="8dip" >
+    android:paddingStart="8dip"
+    android:paddingEnd="8dip" >
 
     <FrameLayout
         android:id="@+id/avatarFrame"
@@ -75,8 +75,8 @@
             android:textAppearance="?android:attr/textAppearanceSmallInverse"
             android:textSize="16sp"
             android:paddingTop="6dp"
-            android:paddingLeft="6dp"
-            android:paddingRight="6dp"
+            android:paddingStart="6dp"
+            android:paddingEnd="6dp"
             android:layout_marginBottom="3dip"
             android:layout_alignParentBottom="true"
             android:textColor="@color/widget_outgoing_text_color"
@@ -84,8 +84,8 @@
 
         <TextView android:id="@+id/date"
             style="@style/WidgetConversationItemDate"
-            android:paddingLeft="6dp"
-            android:paddingRight="6dp"
+            android:paddingStart="6dp"
+            android:paddingEnd="6dp"
             android:layout_marginBottom="9dip"
             android:textSize="12sp"
             android:layout_height="wrap_content"