### 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)

int caret_idx = caret_edit_order[i];
		if (has_selection(caret_idx)) {
			delete_selection(caret_idx);
			continue;
		}
		int curline_len = text[get_caret_line(caret_idx)].length();
		if (get_caret_line(caret_idx) == text.size() - 1 && get_caret_column(caret_idx) == curline_len) {
			continue; 
		}
		int next_line = get_caret_column(caret_idx) < curline_len ? get_caret_line(caret_idx) : get_caret_line(caret_idx) + 1;
		int next_column;
		if (p_all_to_right) {
			
			for (int j = i + 1; j < caret_edit_order.size(); j++) {
				if (get_caret_line(caret_edit_order[j]) != get_caret_line(caret_idx)) {
					break;
				}
				if (has_selection(caret_edit_order[j]) && get_selection_from_line(caret_edit_order[j]) != get_caret_line(caret_idx)) {
					break;
				}
				if (!has_selection(caret_edit_order[j])) {
					i = j;
					caret_idx = caret_edit_order[i];
				}
			}
			if (get_caret_column(caret_idx) == curline_len) {
				continue;
			}
			
			next_column = curline_len;