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_conversation.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.
@@ -27,8 +27,8 @@
         android:layout_width="match_parent"
         android:layout_height="48dp"
         android:orientation="horizontal"
-        android:paddingLeft="10dip"
-        android:paddingRight="10dip"
+        android:paddingStart="10dip"
+        android:paddingEnd="10dip"
         android:layout_alignParentTop="true">
         <TextView
             android:id="@+id/widget_label"
@@ -82,8 +82,8 @@
         android:gravity="center_vertical"
         android:visibility="gone"
         android:singleLine="false"
-        android:paddingRight="20dp"
-        android:paddingLeft="20dp"
+        android:paddingEnd="20dp"
+        android:paddingStart="20dp"
         android:paddingBottom="20dp"
         android:text="@string/tap_to_configure" />
     <ImageView