Fix action bar layout insets.

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

@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
-<ImageView
-    xmlns:android="http://schemas.android.com/apk/res/android"
+<ImageView xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:id="@+id/action_mode_close_button"
     android:layout_width="24dp"
     android:layout_height="24dp"
     android:layout_marginStart="16dp"
-    android:layout_marginEnd="24dp"
-    app:srcCompat="@drawable/ic_x_24" >
-</ImageView>
+    android:layout_marginEnd="32dp"
+    android:contentDescription="@string/Material3SearchToolbar__close"
+    android:scaleType="centerInside"
+    app:srcCompat="@drawable/ic_x_24" />

app/src/main/res/values/styles.xml

@@ -378,7 +378,6 @@
         <item name="titleTextStyle">@style/Signal.Text.TitleLarge</item>
         <item name="closeItemLayout">@layout/action_mode_close_layout</item>
         <item name="theme">@style/Signal.ActionModeTheme</item>
-        <item name="android:paddingStart">10dp</item>
         <item name="height">@dimen/signal_m3_toolbar_height</item>
     </style>