refactor: get rid of jest warnings

[dated]

Summary

Gets rid of the i18n and header search bar warnings in the unit tests. There are more warnings remaining, but those should be taken care of when refactoring the tested component.

Checklist

• Documentation (if necessary)
• Tests (if necessary)
• Ready to be merged

[codecov]

Codecov Report

Merging #2281 into 3.0-react will not change coverage.
The diff coverage is 100.00%.

@@              Coverage Diff              @@
##           3.0-react     #2281     +/-   ##
=============================================
  Coverage     100.00%   100.00%             
=============================================
  Files             24       196    +172     
  Lines            142      1837   +1695     
  Branches          18       341    +323     
=============================================
+ Hits             142      1837   +1695     

Flag	Coverage Δ
#unit	100.00% <100.00%> (?)

Impacted Files	Coverage Δ
src/app/components/Button/Button.tsx	100.00% <ø> (ø)
src/app/components/Card/Card.tsx	100.00% <ø> (ø)
src/app/components/Card/CardControl.tsx	100.00% <ø> (ø)
src/app/components/Address/Address.tsx	100.00% <100.00%> (ø)
src/app/components/Address/utils.ts	100.00% <100.00%> (ø)
src/app/components/Alert/Alert.tsx	100.00% <100.00%> (ø)
src/app/components/Badge/Badge.styles.ts	100.00% <100.00%> (ø)
src/app/components/Badge/Badge.tsx	100.00% <100.00%> (ø)
src/app/components/Breadcrumbs/Breadcrumbs.tsx	100.00% <100.00%> (ø)
src/app/components/Button/Button.styles.ts	100.00% <100.00%> (ø)
... and 222 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update dccf93e...120395f. Read the comment docs.