### 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)

ofs_y -= _get_v_scroll_offset() * row_height;
					bool clipped = false;
					if (ofs_y + row_height < top_limit_y) {
						
						
						clipped = true;
					}
					if (ofs_y > bottom_limit_y) {
						
						i = draw_amount;
						break;
					}
					if (text.get_line_background_color(line) != Color(0, 0, 0, 0)) {
						if (rtl) {
							RenderingServer::get_singleton()->canvas_item_add_rect(ci, Rect2(size.width - ofs_x - xmargin_end, ofs_y, xmargin_end - xmargin_beg, row_height), text.get_line_background_color(line));
						} else {
							RenderingServer::get_singleton()->canvas_item_add_rect(ci, Rect2(xmargin_beg + ofs_x, ofs_y, xmargin_end - xmargin_beg, row_height), text.get_line_background_color(line));
						}
					}
					if (str.length() == 0) {
						
						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);
							}
						}
						
						for (int c = 0; c < carets.size(); c++) {