### 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 (get_caret_count() > 1) {
		remove_secondary_carets();
		return true;
	}
	if (has_selection()) {
		deselect();
		return true;
	}
	return false;
}
void TextEdit::_get_above_below_caret_line_column(int p_old_line, int p_old_wrap_index, int p_old_column, bool p_below, int &p_new_line, int &p_new_column, int p_last_fit_x) const {
	if (p_last_fit_x == -1) {
		p_last_fit_x = _get_column_x_offset_for_line(p_old_column, p_old_line, p_old_column);
	}
	
	p_new_line = p_old_line;
	int caret_wrap_index = p_old_wrap_index;
	if (p_below) {
		if (caret_wrap_index < get_line_wrap_count(p_new_line)) {
			caret_wrap_index++;
		} else {
			p_new_line++;
			caret_wrap_index = 0;
		}
	} else {
		if (caret_wrap_index == 0) {