[JS] Flaky javascript unittest

See build log: https://github.com/ursacomputing/crossbow/runs/4871354453?check_suite_focus=true#step:5:8164

While the error is flaky it occurs pretty often, it would be nice to have fixed.

Attached a screenshot from the 7.0.0RC1 verification tasks where all of the builds fail due to this issue.

**Reporter**: [Krisztian Szucs](https://issues.apache.org/jira/browse/ARROW-15392) / @kszucs
#### Original Issue Attachments:
- [js-flaky.jpg](https://issues.apache.org/jira/secure/attachment/13039159/js-flaky.jpg)
#### PRs and other links:
- [GitHub Pull Request apache/arrow#12814](https://github.com/apache/arrow/pull/12814)
- [GitHub Pull Request apache/arrow#13606](https://github.com/apache/arrow/pull/13606)

_{**Note**: *This issue was originally created as [ARROW-15392](https://issues.apache.org/jira/browse/ARROW-15392). Please see the [migration documentation](https://github.com/apache/arrow/issues/14542) for further details.*}