### Godot version

4.0 stable

### System information

Manjaro Linux, kernel 6.1.1-1-MANJARO, AMD Ryzen 5 3600, AMD RX 580

### Issue description

The `wrap_mode` property of the `TextEdit` node doesn't seem to really do anything. Setting it to `LINE_WRAPPING_BOUNDARY` simply means that there won't be an horizontal scrollbar if the text overshoots the boundary, instead of actually forcing the text to the next line so that it stays visible.

### Steps to reproduce

Create a TextEdit node and set its `wrap_mode` property to `LINE_WRAPPING_BOUNDARY`

### Minimal reproduction project

[WrapBugDemo.zip](https://github.com/godotengine/godot/files/10875969/WrapBugDemo.zip)

ERR_FAIL_INDEX(p_line, text.size());
	ERR_FAIL_COND(p_wrap_index < 0);
	ERR_FAIL_COND(p_wrap_index > get_line_wrap_count(p_line));
	set_v_scroll(get_scroll_pos_for_line(p_line, p_wrap_index));
}
int TextEdit::get_first_visible_line() const {
	return CLAMP(first_visible_line, 0, text.size() - 1);
}
void TextEdit::set_line_as_center_visible(int p_line, int p_wrap_index) {
	ERR_FAIL_INDEX(p_line, text.size());
	ERR_FAIL_COND(p_wrap_index < 0);
	ERR_FAIL_COND(p_wrap_index > get_line_wrap_count(p_line));
	int visible_rows = get_visible_line_count();
	Point2i next_line = get_next_visible_line_index_offset_from(p_line, p_wrap_index, (-visible_rows / 2) - 1);
	int first_line = p_line - next_line.x + 1;
	if (first_line < 0) {
		set_v_scroll(0);
		return;
	}
	set_v_scroll(get_scroll_pos_for_line(first_line, next_line.y));
}
void TextEdit::set_line_as_last_visible(int p_line, int p_wrap_index) {