Update LibraryFunctions.cs (#7040)

Author: agocke

core/nativeaot/NativeLibrary/LibraryFunctions.cs

@@ -8,13 +8,13 @@ namespace NativeLibrary;
 
 public class LibraryFunctions
 {
-    [UnmanagedCallersOnly(EntryPoint = "add")]
+    [UnmanagedCallersOnly(EntryPoint = "aotsample_add")]
     public static int Add(int a, int b)
     {
         return a + b;
     }
 
-    [UnmanagedCallersOnly(EntryPoint = "write_line")]
+    [UnmanagedCallersOnly(EntryPoint = "aotsample_write_line")]
     public static int WriteLine(IntPtr pString)
     {
         // The marshalling code is typically auto-generated by a custom tool in larger projects.
@@ -35,7 +35,7 @@ public static int WriteLine(IntPtr pString)
         return 0;
     }
 
-    [UnmanagedCallersOnly(EntryPoint = "sumstring")]
+    [UnmanagedCallersOnly(EntryPoint = "aotsample_sumstring")]
     public static IntPtr sumstring(IntPtr first, IntPtr second)
     {
         // Parse strings from the passed pointers