feat(FocusZone): export FocusZoneMode type

[sophieH29]

Export FocusZoneMode as a missing part for creating/overriding accessibility behaviors

[codecov]

Codecov Report

Merging #1229 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1229      +/-   ##
==========================================
+ Coverage   83.22%   83.22%   +<.01%     
==========================================
  Files         752      752              
  Lines        8905     8906       +1     
  Branches     1194     1262      +68     
==========================================
+ Hits         7411     7412       +1     
  Misses       1480     1480              
  Partials       14       14

Impacted Files	Coverage Δ
packages/react/src/index.ts	100% <100%> (ø)	⬆️

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[codecov]

Codecov Report

Merging #1229 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1229      +/-   ##
==========================================
+ Coverage   83.21%   83.21%   +<.01%     
==========================================
  Files         754      754              
  Lines        8912     8913       +1     
  Branches     1262     1194      -68     
==========================================
+ Hits         7416     7417       +1     
  Misses       1482     1482              
  Partials       14       14

Impacted Files	Coverage Δ
packages/react/src/index.ts	100% <100%> (ø)	⬆️

---

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 fe9cbf3...b65fb1a. Read the comment docs.