fix incorrect stats reported to jest

[k-yle]

Description

Closes #243. See that issue for details.

Motivation and Context

When jest finishes, the statistics shown are wrong if some snapshots failed.

How Has This Been Tested?

There are no existing tests that assert on what is reported to jest because UNSTABLE_SKIP_REPORTING is enabled.

I've tested this manually in a simple project.

Types of Changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation (adding or updating documentation)
• [ ] Dependency update

Checklist:

• [ ] My change requires a change to the documentation and I have updated the documentation accordingly.
• [x] My changes are in sync with the code style of this project.
• [x] There aren't any other open Pull Requests for the same issue/update.
• [ ] These changes should be applied to a maintenance branch.
• [ ] I have added the Apache 2.0 license header to any new files created.

What is the Impact to Developers Using Jest-Image-Snapshot?

Stats reported to jest are now correct.

[oneamexbot]

:tada: This PR is included in version 4.4.1 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot :package::rocket: