Description

When switching between light and dark theme at runtime, the Editor and Entry controls do not update their placeholder or text colors to reflect the new theme. This leads to readability issues, such as light text on a light background or dark text on a dark background.

Steps to Reproduce

1. Use Editor and Entry controls in a .NET MAUI app.
2. Run the app in light mode and observe the text and placeholder colors.
3. Change the app's theme to dark mode at runtime using App.Current.UserAppTheme = AppTheme.Dark;
4. Observe that the text and placeholder colors do not update accordingly.