replace if/else inside the test case by itChromeOnly and itFirefoxOnly

[marabesi]

What kind of change does this PR introduce?

This is a refactor that aims to improve a bit how the test is structured? Instead of having a if/else inside the test case, I am using the utility function itChromeOnly and itFirefoxOnly

Did you add tests for your changes?

I ran the test suite in my local

If relevant, did you update the documentation?

Not sure if this requires doc update?

Summary

The motivation is just for the test structure in a sense? I saw that this utility function was added but is not used on this specific case. Maybe it is a good idea to use the helper. If it is, I can try to inspect the code and replace in other places.

Does this PR introduce a breaking change?

As far as I can see no

Other information

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