make sure startIndex <= endIndex when measuring visible tabs

[rinick]

resolves issue: #444

[vercel]

This pull request is being automatically deployed with Vercel (learn more).
To see the status of your deployment, click below or on the icon next to each commit.

🔍 Inspect: https://vercel.com/react-component/tabs/BMMQgGTCGZTXX1EFz44mJfbA5nCx
✅ Preview: https://tabs-git-fork-rinick-patch-1-react-component.vercel.app

[codecov]

Codecov Report

Merging #454 (7038242) into master (3aeba5a) will decrease coverage by 0.17%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##           master     #454      +/-   ##
==========================================
- Coverage   99.47%   99.30%   -0.18%     
==========================================
  Files          13       13              
  Lines         570      572       +2     
  Branches      143      144       +1     
==========================================
+ Hits          567      568       +1     
- Misses          3        4       +1     

Impacted Files	Coverage Δ
src/hooks/useVisibleRange.ts	97.14% <50.00%> (-2.86%)	⬇️

---

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 3aeba5a...7038242. Read the comment docs.

[afc163]

Could you add a test case?