OpenRefine exports projects as .tar.gz and importing those via Cypress does not work

While working on issue #1457, I was trying to write a cypress test for the feature and encountered a problem where only the files with .zip extension were getting imported, while the files with .tar.gz extension were showing error upon importing.

To Reproduce

Steps to reproduce the behavior:
1.Open any project in OpenRefine and export OpenRefine project archive to file
2. Try writing a cypress test for any issue and attach the exported file (mentioned above) (by default it should have .tar.gz extension )to 'cy.get('#project-tar-file-input').attachFile(<eg.tar.gz>)'
3. Then, try to run the cypress test.

Current Results

In cypress the test showed an error at this line and failed to import the file.

Expected Behavior

.tar.gz is an extension for project archive generated by OpenRefine is expected to be imported again without transforming it manually.

Screenshots

Versions

Operating System: macOS High Sierra Version 10.13.6
Browser Version: chrome 113.0.5672.126 (Official Build) (x86_64)
JRE or JDK Version: 17.0.6
OpenRefine: Version 3.8-SNAPSHOT

Start by reproducing the Cypress flow using cy.get('#project-tar-file-input').attachFile with an exported .tar.gz project archive, then trace the project archive import handling. Done means a .tar.gz archive exported by OpenRefine can be attached and imported in Cypress without manual conversion.