fix: Fix errors when FileSystemFileEntry is unsupported

[Pytal]

When reaching the line on Chromium browsers it will throw

According to online docs FileSystemFileEntry should be available on Chrome but is not defined 😵

[susnux]

Yes code looks good :)

But I think we have also a problem here in the utils function, see:
https://developer.mozilla.org/en-US/docs/Web/API/File_and_Directory_Entries_API/Firefox_support#chrome_deviations_from_the_specification

[Pytal]

But I think we have also a problem here in the utils function, see: developer.mozilla.org/en-US/docs/Web/API/File_and_Directory_Entries_API/Firefox_support#chrome_deviations_from_the_specification

Uncaught ReferenceError: FileEntry is not defined hmm...

[Pytal]

I think FileSystemFileHandle is used in Chrome

[susnux]

I think FileSystemFileHandle is used in Chrome

That is a different API (which is only used by Chrome as all other declined to use that due to security issues).

It seems like chrome does not provide those classes as public access, you still can log a file entry on chrome but the class prototype is not exposed.
So maybe we need to just check properties (isFile / isDirectory to detect which type it is).