rename FlashWrapper to HighlightWrapper

lib/widgets/highlight_wrapper.dart

@@ -0,0 +1,20 @@
+import "package:flutter/material.dart";
+
+class HighlightWrapper extends StatelessWidget {
+  final Widget child;
+  final bool isHighlighted;
+  const HighlightWrapper(this.child, {this.isHighlighted = false, super.key});
+
+  @override
+  Widget build(BuildContext context) => ClipRRect(
+    borderRadius: .all(.circular(12)),
+    child: AnimatedContainer(
+      padding: isHighlighted ? .all(8) : .all(0),
+      color: isHighlighted
+          ? Theme.of(context).colorScheme.onSurface.withAlpha(50)
+          : Colors.transparent,
+      duration: .new(milliseconds: 250),
+      child: child,
+    ),
+  );
+}