### 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)

const int old_width = text.write[p_line].width;
	int line_width = get_line_width(p_line);
	text.write[p_line].width = line_width;
	
	if (old_width == max_width && line_width < max_width) {
		_calculate_max_line_width();
	} else if (!is_hidden(p_line)) {
		max_width = MAX(line_width, max_width);
	}
}
void TextEdit::Text::invalidate_all_lines() {
	for (int i = 0; i < text.size(); i++) {
		text.write[i].data_buf->set_width(width);
		if (tab_size_dirty) {
			if (tab_size > 0) {
				Vector<float> tabs;
				tabs.push_back(font->get_char_size(' ', font_size).width * tab_size);
				text.write[i].data_buf->tab_align(tabs);
			}
			
			text.write[i].width = get_line_width(i);
		}
	}
	if (tab_size_dirty) {
		_calculate_max_line_width();
		tab_size_dirty = false;
	}
}
void TextEdit::Text::invalidate_font() {