fix(examples): react-native: update .gitignore to exclude lib folder

[arnaudbzn]

This fix the missing src/lib folder.

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[codecov]

Codecov Report

Merging #3196 (7c6c98c) into master (6722d06) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3196   +/-   ##
=======================================
  Coverage   96.47%   96.47%           
=======================================
  Files          45       45           
  Lines        2270     2270           
  Branches      639      639           
=======================================
  Hits         2190     2190           
  Misses         77       77           
  Partials        3        3           

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[tannerlinsley]

🎉 This PR is included in version 3.34.9 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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[tannerlinsley]

🎉 This PR is included in version 4.0.0-alpha.8 🎉

The release is available on:

• npm package (@alpha dist-tag)
• GitHub release

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