Change default text color of CupertinoAlertDialog to theme primary color (#111785)

packages/flutter/lib/src/cupertino/dialog.dart

diff --git a/packages/flutter/lib/src/cupertino/dialog.dart b/packages/flutter/lib/src/cupertino/dialog.dart
index 0cec4f9..13cb42b 100644
--- a/packages/flutter/lib/src/cupertino/dialog.dart
+++ b/packages/flutter/lib/src/cupertino/dialog.dart
@@ -1713,7 +1713,7 @@
   Widget build(BuildContext context) {
     TextStyle style = _kCupertinoDialogActionStyle.copyWith(
       color: CupertinoDynamicColor.resolve(
-        isDestructiveAction ? CupertinoColors.systemRed : CupertinoColors.systemBlue,
+        isDestructiveAction ? CupertinoColors.systemRed : CupertinoTheme.of(context).primaryColor,
         context,
       ),
     );

packages/flutter/test/cupertino/dialog_test.dart

diff --git a/packages/flutter/test/cupertino/dialog_test.dart b/packages/flutter/test/cupertino/dialog_test.dart
index 42037f0..791cd20 100644
--- a/packages/flutter/test/cupertino/dialog_test.dart
+++ b/packages/flutter/test/cupertino/dialog_test.dart
@@ -125,6 +125,23 @@
     expect(widget.style.color!.withAlpha(255), CupertinoColors.systemRed.color);
   });
 
+  testWidgets('Dialog default action style', (WidgetTester tester) async {
+    await tester.pumpWidget(
+      CupertinoTheme(
+      data: const CupertinoThemeData(
+        primaryColor: CupertinoColors.systemGreen,
+      ),
+      child: boilerplate(const CupertinoDialogAction(
+        child: Text('Ok'),
+      )),
+      ),
+    );
+
+    final DefaultTextStyle widget = tester.widget(find.byType(DefaultTextStyle));
+
+    expect(widget.style.color!.withAlpha(255), CupertinoColors.systemGreen.color);
+  });
+
   testWidgets('Dialog dark theme', (WidgetTester tester) async {
     await tester.pumpWidget(
       CupertinoApp(