### 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)

text_editor->begin_complex_operation();
	Vector<int> caret_edit_order = text_editor->get_caret_index_edit_order();
	
	Vector<Vector<int>> caret_groups;
	Vector<Pair<int, int>> group_borders;
	Vector<int> group_border_ends;
	
	for (int i = 0; i < caret_edit_order.size(); i++) {
		int c = caret_edit_order[i];
		Vector<int> new_group{ c };
		Pair<int, int> group_border;
		group_border.first = _get_affected_lines_from(c);
		group_border.second = _get_affected_lines_to(c);
		for (int j = i; j < caret_edit_order.size() - 1; j++) {
			int c_current = caret_edit_order[j];
			int c_next = caret_edit_order[j + 1];
			int next_start_pos = _get_affected_lines_from(c_next);
			int next_end_pos = _get_affected_lines_to(c_next);
			int current_start_pos = text_editor->has_selection(c_current) ? text_editor->get_selection_from_line(c_current) : text_editor->get_caret_line(c_current);
			i = j;
			if (next_end_pos == current_start_pos || next_end_pos + 1 == current_start_pos) {
				group_border.first = next_start_pos;
				new_group.push_back(c_next);
				
				if (j + 1 == caret_edit_order.size() - 1) {
					i++;
				}
			} else {