Additional test for calling getScaleLabel on facts with no units.

[paulwarren-wk]

Reason for change

Additional tests for the fix on #446 that more closely reflect what caused #435. The underlying issue on #435 was calling getScaleLabel on a fact with absent units, rather than null units.

getScaleLabel was previously tested via readableAccuracy which has its own guard for non-numeric facts, but it's also called directly from getUsedScaleMap on anything with a scale attribute.

Description of change

Additional tests that call getScaleLabel with missing units.

Closes #435 .

Steps to Test

review:
@Workiva/xt
@paulwarren-wk

[aviary2-wf]

Security Insights

No security relevant content was detected by automated scans.

Action Items

• Review PR for security impact; comment "security review required" if needed or unsure
• Verify aviary.yaml coverage of security relevant code

---

Questions or Comments? Reach out on Slack: #support-infosec.

[austinmatherne-wk]

Verified

• ci

QA +10
@Workiva/release-management-p

[rmconsole-wf]

+1 from RM