### Godot version

Godot 4.0 statble

### System information

Windows 10

### Issue description

TextEdit boundary wrapmode not works, it only removes the horizontal scrollbar

### Steps to reproduce

Add a textedit in editor, set  the wrap mode to boundary, type something.

### Minimal reproduction project

![image](https://user-images.githubusercontent.com/9168814/224538077-2efb4e67-8976-496e-9223-c460365ecc28.png)
![image](https://user-images.githubusercontent.com/9168814/224538084-af773b86-d73a-4e8b-9b66-a0fb4bde1168.png)

if (i == end) {
				len = end_col;
			}
			if (i == begin) {
				len -= begin_col;
			}
			String new_line = text_editor->get_line(i).substr(i == begin ? begin_col : 0, len);
			switch (p_case) {
				case UPPER: {
					new_line = new_line.to_upper();
				} break;
				case LOWER: {
					new_line = new_line.to_lower();
				} break;
				case CAPITALIZE: {
					new_line = new_line.capitalize();
				} break;
			}
			if (i == begin) {
				new_line = text_editor->get_line(i).left(begin_col) + new_line;
			}
			if (i == end) {
				new_line = new_line + text_editor->get_line(i).substr(end_col);
			}
			text_editor->set_line(i, new_line);
		}
	}
	text_editor->end_complex_operation();
}
void CodeTextEditor::move_lines_up() {