### 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)

undo_stack_pos = undo_stack_pos->next();
			op = undo_stack_pos->get();
			_do_text_op(op, false);
			current_op.version = op.version;
			if (undo_stack_pos->get().chain_backward) {
				break;
			}
		}
	}
	_update_scrollbars();
	bool dirty_carets = carets.size() != undo_stack_pos->get().end_carets.size();
	if (!dirty_carets) {
		for (int i = 0; i < carets.size(); i++) {
			if (carets[i].line != undo_stack_pos->get().end_carets[i].line || carets[i].column != undo_stack_pos->get().end_carets[i].column) {
				dirty_carets = true;
				break;
			}
		}
	}
	carets = undo_stack_pos->get().end_carets;
	undo_stack_pos = undo_stack_pos->next();
	if (dirty_carets && !caret_pos_dirty) {
		if (is_inside_tree()) {
			MessageQueue::get_singleton()->push_call(this, "_emit_caret_changed");
		}
		caret_pos_dirty = true;
	}
	adjust_viewport_to_caret();
}
void TextEdit::clear_undo_history() {