refactor(mobile): widgets (#9291)

* refactor(mobile): widgets

* update

mobile/lib/widgets/common/share_dialog.dart

@@ -0,0 +1,22 @@
+import 'package:easy_localization/easy_localization.dart';
+import 'package:flutter/material.dart';
+
+class ShareDialog extends StatelessWidget {
+  const ShareDialog({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return AlertDialog(
+      content: Column(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          const CircularProgressIndicator(),
+          Container(
+            margin: const EdgeInsets.only(top: 12),
+            child: const Text('share_dialog_preparing').tr(),
+          ),
+        ],
+      ),
+    );
+  }
+}