### 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 (!selecting_enabled) {
		return;
	}
	if (!has_selection(p_caret) || get_selection_mode() == SelectionMode::SELECTION_MODE_NONE) {
		carets.write[p_caret].selection.active = true;
		set_selection_mode(SelectionMode::SELECTION_MODE_SHIFT, get_caret_line(p_caret), get_caret_column(p_caret), p_caret);
		return;
	}
	set_selection_mode(SelectionMode::SELECTION_MODE_SHIFT, get_selection_line(p_caret), get_selection_column(p_caret), p_caret);
}
void TextEdit::_post_shift_selection(int p_caret) {
	if (!selecting_enabled) {
		return;
	}
	if (has_selection(p_caret) && get_selection_mode() == SelectionMode::SELECTION_MODE_SHIFT) {
		select(get_selection_line(p_caret), get_selection_column(p_caret), get_caret_line(p_caret), get_caret_column(p_caret), p_caret);
	}
}
void TextEdit::_update_wrap_at_column(bool p_force) {