Add doc about MediaQuery to Chip (#29445)

Fixes https://github.com/flutter/flutter/issues/21232

packages/flutter/lib/src/material/chip.dart

@@ -448,8 +448,10 @@ abstract class TappableChipAttributes {
 /// Supplying a non-null [onDeleted] callback will cause the chip to include a
 /// button for deleting the chip.
 ///
-/// Requires one of its ancestors to be a [Material] widget. The [label]
-/// and [clipBehavior] arguments must not be null.
+/// Its ancestors must include [Material], [MediaQuery], [Directionality], and
+/// [MaterialLocalizations]. Typically all of these widgets are provided by
+/// [MaterialApp] and [Scaffold]. The [label] and [clipBehavior] arguments must
+/// not be null.
 ///
 /// {@tool sample}
 ///