Date Picker year selectors announce as 'buttons' to accessibility framework. (#96546)

diff --git a/packages/flutter/lib/src/material/calendar_date_picker.dart b/packages/flutter/lib/src/material/calendar_date_picker.dart
index 6fac69d..c926df8 100644
--- a/packages/flutter/lib/src/material/calendar_date_picker.dart
+++ b/packages/flutter/lib/src/material/calendar_date_picker.dart
@@ -1224,6 +1224,7 @@
         child: Center(
           child: Semantics(
             selected: isSelected,
+            button: true,
             child: Text(year.toString(), style: itemStyle),
           ),
         ),
diff --git a/packages/flutter/test/material/calendar_date_picker_test.dart b/packages/flutter/test/material/calendar_date_picker_test.dart
index 0930482..2f4dc94 100644
--- a/packages/flutter/test/material/calendar_date_picker_test.dart
+++ b/packages/flutter/test/material/calendar_date_picker_test.dart
@@ -840,6 +840,7 @@
             hasTapAction: true,
             isSelected: year == 2016,
             isFocusable: true,
+            isButton: true,
           ));
         }
       });