Fixes #133027

When setting a `textButtonTheme` it should not override the native context menu colors.

```dart
  theme: ThemeData(
    textButtonTheme: const TextButtonThemeData(
      style: ButtonStyle(
        backgroundColor: MaterialStatePropertyAll<Color>(
            Color(0xff05164d)), // blue color
      ),
    ),
  ),
```

Before|After
--|--
<img width="341" alt="Screenshot 2023-08-24 at 1 17 25 PM" src="https://github.com/flutter/flutter/assets/948037/30ea0ef8-b41a-4e1f-93a3-50fcd87ab2bf">|<img width="341" alt="Screenshot 2023-08-24 at 1 15 35 PM" src="https://github.com/flutter/flutter/assets/948037/5f59481c-aa5d-4850-aa4b-daa678e54044">