Don't show editor button on Built-In styles, advise user to copy instead

app/src/main/res/drawable/bg_alert_warning.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+       android:shape="rectangle">
+    <solid android:color="#2A2100" />
+    <corners android:radius="10dp" />
+    <stroke
+            android:width="1dp"
+            android:color="#4D3D00" />
+</shape>

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

@@ -46,14 +46,34 @@
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/fileName" />
 
+    <TextView
+            android:id="@+id/builtInStyleAlert"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="12dp"
+            android:paddingHorizontal="14dp"
+            android:paddingVertical="12dp"
+            android:background="@drawable/bg_alert_warning"
+            android:text="Built-in styles can't be edited directly\nMake a copy to customize it"
+            android:textColor="#FFD54F"
+            android:textSize="14sp"
+            android:lineSpacingExtra="2dp"
+            android:gravity="center"
+            android:drawablePadding="8dp"
+            android:visibility="gone"
+            tools:visibility="visible"
+            app:layout_constraintTop_toBottomOf="@id/styleType"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintEnd_toEndOf="parent" />
+
     <androidx.constraintlayout.widget.ConstraintLayout
             android:id="@+id/editButton"
             android:layout_width="match_parent"
             android:layout_height="38dp"
-            android:layout_marginTop="12dp"
+            android:layout_marginTop="16dp"
             android:layout_marginBottom="2dp"
             android:background="#1B1A1A"
-            app:layout_constraintTop_toBottomOf="@id/styleType"
+            app:layout_constraintTop_toBottomOf="@id/builtInStyleAlert"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintEnd_toEndOf="parent">