Add support for default No button

[leaanthony]

Adds support for specifying that the "No" button is default when opening a question dialog on Windows.

Example:

	result, err := runtime.MessageDialog(a.ctx, runtime.MessageDialogOptions{
		Type:          runtime.QuestionDialog,
		Title:         "Question",
		Message:       "Do you want to continue?",
		DefaultButton: "No",
	})

Fixes #1871

Example: https://github.com/wailsapp/examples/blob/main/default_no_question_dialog/README.md

[cloudflare-workers-and-pages]

Deploying with    Cloudflare Pages

Latest commit:	4c99a7e
Status:	✅  Deploy successful!
Preview URL:	https://0a646de8.wails.pages.dev
Branch Preview URL:	https://feature-1871-windows-dialog-.wails.pages.dev

View logs