### Godot version

4.2 Stable

### System information

Linux

### Issue description

Calling TreeItem set_text() on a TreeItem that was removed via remove_child() causes debugging to end and the application to close without any error message.

### Steps to reproduce

Run the included example to get the debugger to crash. Comment out "treeItem.remove_child(subTreeItem)" for normal behaviour. 

### Minimal reproduction project

[treeItemCrash.zip](https://github.com/godotengine/godot/files/13534005/treeItemCrash.zip)

ERR_FAIL_INDEX_V(p_column, cells.size(), Array());
	return cells[p_column].st_args;
}
void TreeItem::set_language(int p_column, const String &p_language) {
	ERR_FAIL_INDEX(p_column, cells.size());
	if (cells[p_column].language != p_language) {
		cells.write[p_column].language = p_language;
		cells.write[p_column].dirty = true;
		cells.write[p_column].cached_minimum_size_dirty = true;
		_changed_notify(p_column);
	}
}
String TreeItem::get_language(int p_column) const {
	ERR_FAIL_INDEX_V(p_column, cells.size(), "");
	return cells[p_column].language;
}
void TreeItem::set_suffix(int p_column, String p_suffix) {
	ERR_FAIL_INDEX(p_column, cells.size());
	if (cells[p_column].suffix == p_suffix) {
		return;
	}
	cells.write[p_column].suffix = p_suffix;
	cells.write[p_column].cached_minimum_size_dirty = true;
	_changed_notify(p_column);
}
String TreeItem::get_suffix(int p_column) const {