Describe the bug

When I call getContent() after creating a MarkdownEditor, I receive an IllegalArgumentException "argument 'content' is null." Additionally, if I set the initial content of the component and then make changes in the text area, calling getContent() does not reflect the updated value.

Expected behavior

Empty string for the first case, changed content for the second one.

Minimal reproducible example

MarkdownEditor test = new MarkdownEditor();
System.out.println(test.getContent());

Add-on Version

1.0.0

Vaadin Version

24.4.10

Additional information

No response