Exposing data table column width to child components

[AndreEPaul]

PR Checklist

Storybook can be viewed here

• Manually tested across supported browsers

  • Chrome
  • Firefox
  • Safari

• Unit tests written (common at minimum)

• PR has one of the semver- labels

• Two core team engineer approvals

• One core team UX approval

[AndreEPaul]

Since this is a small change, I wasn't sure if any tests needed to be added.

Please let me know if I should add one or add an example table for the usage.

(side note: not sure why TextField.tsx made it into the Codecov Report diff. Didn't make a change there.)

Edit: test case added for passing width along to child component.

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[codecov-commenter]

Codecov Report

Merging #1235 (41fc7f7) into master (ecf5163) will decrease coverage by 0.02%.
The diff coverage is 80.00%.

❗ Current head 41fc7f7 differs from pull request most recent head 35b76db. Consider uploading reports for the commit 35b76db to get more accurate results

@@            Coverage Diff             @@
##           master    #1235      +/-   ##
==========================================
- Coverage   89.01%   88.98%   -0.03%     
==========================================
  Files         222      222              
  Lines        5536     5540       +4     
  Branches     1407     1411       +4     
==========================================
+ Hits         4928     4930       +2     
- Misses        590      592       +2     
  Partials       18       18              

Impacted Files	Coverage Δ
src/components/DataTable/DataTable.tsx	95.33% <80.00%> (-0.56%)	⬇️
src/components/TextField/TextField.tsx	95.65% <0.00%> (-1.45%)	⬇️