Fix sample/study counter in VS description

[forus]

The counters were 0 on first time popup showed

Fix cBioPortal/cbioportal# (see https://help.github.com/en/articles/closing-issues-using-keywords)

Describe changes proposed in this pull request:

• fix zero counts for virtual study creation description

Checks

• Has tests or has a separate issue that describes the types of test that should be created. If no test is included it should explicitly be mentioned in the PR why there is no test.
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• Is this PR adding logic based on one or more clinical attributes? If yes, please make sure validation for this attribute is also present in the data validation / data loading layers (in backend repo) and documented in File-Formats Clinical data section!

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[forus]

This PR fixes this issue cBioPortal/cbioportal#10758

[haynescd]

@alisman is {message || null } needed if we don't use it below?

[alisman]

@haynescd not sure what you mean don't use it below. it's being rendered here.

[haynescd]

@forus Can you rebase?

[pieterlukasse]

looks good to me. Is there any test that needs to be updated?