### Godot version

v4.1.1 stable

### System information

Windows 11 - Chrome & Firefox - Godot 4.1.1 - Web Editor

### Issue description

This issue also happens on Chromebook.

Every file won't import correctly and will always show an 'X' next to it. It is not possible to use these files basically making the editor worthless.

### Steps to reproduce

1. Open Godot Web Editor
2. Create Project
3. Open It
4. Check the FileSystem in the bottom-left

### Minimal reproduction project

N/A
struct stat st = {};
	int err = stat(path.utf8().get_data(), &st);
	if (!err) {
		switch (st.st_mode & S_IFMT) {
			case S_IFLNK:
			case S_IFREG:
				break;
			default:
				return ERR_FILE_CANT_OPEN;
		}
	}
	if (is_backup_save_enabled() && (p_mode_flags == WRITE)) {
		save_path = path;
		
		path = path + "-XXXXXX";
		CharString cs = path.utf8();
		int fd = mkstemp(cs.ptrw());
		if (fd == -1) {
			last_error = ERR_FILE_CANT_OPEN;
			return last_error;
		}
		
		mode_t mask = umask(022);
		umask(mask);
		fchmod(fd, 0666 & ~mask);
		path = String::utf8(cs.ptr());
		f = fdopen(fd, mode_string);
		if (f == nullptr) {