### 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 (has_selection(c) && line >= get_selection_from_line(c) && line <= get_selection_to_line(c) && char_margin >= xmargin_beg) {
								float char_w = theme_cache.font->get_char_size(' ', theme_cache.font_size).width;
								if (rtl) {
									RenderingServer::get_singleton()->canvas_item_add_rect(ci, Rect2(size.width - xmargin_beg - ofs_x - char_w, ofs_y, char_w, row_height), theme_cache.selection_color);
								} else {
									RenderingServer::get_singleton()->canvas_item_add_rect(ci, Rect2(xmargin_beg + ofs_x, ofs_y, char_w, row_height), theme_cache.selection_color);
								}
							}
						}
					} else {
						
						if (caret_line_wrap_index_map.has(line) && caret_line_wrap_index_map[line].has(line_wrap_index) && highlight_current_line) {
							if (rtl) {
								RenderingServer::get_singleton()->canvas_item_add_rect(ci, Rect2(size.width - ofs_x - xmargin_end, ofs_y, xmargin_end, row_height), theme_cache.current_line_color);
							} else {
								RenderingServer::get_singleton()->canvas_item_add_rect(ci, Rect2(ofs_x, ofs_y, xmargin_end, row_height), theme_cache.current_line_color);
							}
						}
					}
					if (line_wrap_index == 0) {
						
						cache_entry.y_offset = ofs_y;
						int gutter_offset = theme_cache.style_normal->get_margin(SIDE_LEFT);
						for (int g = 0; g < gutters.size(); g++) {
							const GutterInfo gutter = gutters[g];
							if (!gutter.draw || gutter.width <= 0) {
								continue;
							}
							switch (gutter.type) {
								case GUTTER_TYPE_STRING: {