fix: #3815 remove cvat filename prefixing

[hoshimura]

Resolves #3815

keeping old behavior for cvat versions < 2.4.6 because of cvat bug fix cvat-ai/cvat#5083

Change-Id: I542695437c05c09bb48023d598af479965abb384

What changes are proposed in this pull request?

For cvat server versions >= 2.4.6

• remove the sequence prefix added to maintain the lexographical order of older cvat versions.

How is this patch tested? If it is not, please explain why.

Verified on our local cvat instance before and after patch

Release Notes

Is this a user-facing change that should be mentioned in the release notes?

• No. You can skip the rest of this section.
• Yes. Give a description of this change to be included in the release
  notes for FiftyOne users.

Solves issue #3815 addressing filename prefixing of cvat samples.

What areas of FiftyOne does this PR affect?

• App: FiftyOne application changes
• Build: Build and test infrastructure changes
• Core: Core fiftyone Python library changes
• Documentation: FiftyOne documentation changes
• Other

[brimoor]

@hoshimura amazing thank you!

@ehofesmann can you give this a quick review + test?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

❗ No coverage uploaded for pull request base (release/v0.23.0@57c4524). Click here to learn what that means.

Additional details and impacted files

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##             release/v0.23.0    #3823   +/-   ##
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Flag	Coverage Δ
app	15.65% <0.00%> (?)

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[ehofesmann]

Thanks for the contribution @hoshimura ! This is something I've been wanting to take a look at for some time, this update is much appreciated. It works great!