more refactor

lib/chat/views/empty_chat_widget.dart

@@ -0,0 +1,34 @@
+import 'package:flutter/material.dart';
+
+class EmptyChatWidget extends StatelessWidget {
+  const EmptyChatWidget({super.key});
+
+  @override
+  // ignore: prefer_expression_function_bodies
+  Widget build(
+    BuildContext context,
+  ) =>
+      Container(
+        width: double.infinity,
+        height: double.infinity,
+        decoration: BoxDecoration(
+          color: Theme.of(context).scaffoldBackgroundColor,
+        ),
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            Icon(
+              Icons.chat,
+              color: Theme.of(context).disabledColor,
+              size: 48,
+            ),
+            Text(
+              'Say Something',
+              style: Theme.of(context).textTheme.bodyMedium?.copyWith(
+                    color: Theme.of(context).disabledColor,
+                  ),
+            ),
+          ],
+        ),
+      );
+}