### 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)

return;
		}
		
		if (k->is_action("ui_text_indent", true)) {
			if (editable) {
				insert_text_at_caret("\t");
			}
			accept_event();
			return;
		}
		
		if (allow_unicode_handling && editable && k->get_unicode() >= 32) {
			handle_unicode_input(k->get_unicode());
			accept_event();
			return;
		}
	}
}
void TextEdit::_swap_current_input_direction() {
	if (input_direction == TEXT_DIRECTION_LTR) {
		input_direction = TEXT_DIRECTION_RTL;
	} else {
		input_direction = TEXT_DIRECTION_LTR;
	}
	for (int i = 0; i < carets.size(); i++) {
		set_caret_column(get_caret_column(i), i == 0, i);
	}
	queue_redraw();
}
void TextEdit::_new_line(bool p_split_current_line, bool p_above) {