Build failure vtkParallelTransportTest1.cxx

[jcfr]

Fix regression introduced in cf11265

vtkAddon/Testing/vtkParallelTransportTest1.cxx:108:7: error: ‘tangentsArray’ was not declared in this scope; did you mean ‘tangents’?

Source: https://slicer.cdash.org/viewBuildError.php?buildid=4005586

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Related pull request:

• COMP: Update to newer find_package(Python3) support #59

[jcfr]

@hjmjohnson Do you think you could have a look ? 🙏

This broke the current Preview build

cc: @lassoan @jamesobutler @sjh26 @ebrahimebrahim

[lassoan]

I've pushed a fix.

I did not catch this error, because I've just switched to the very latest vtkAddon tag after my testing was completed. I've started a new full test. If this issue is fixed and all tests pass then I proceed with further Qt6 PRs to Slicer core.