feat: support defaultSource on iOS and Android

[DylanVann]

Thanks to @danielgindi, @regant, and @Zhangguiguang for working on this!

[codecov[bot]]

Codecov Report

Merging #921 (5851f85) into main (6255fc4) will increase coverage by 3.70%. The diff coverage is 100.00%.

@@             Coverage Diff             @@
##             main      #921      +/-   ##
===========================================
+ Coverage   96.29%   100.00%   +3.70%     
===========================================
  Files           1         1              
  Lines          27        38      +11     
  Branches        2         5       +3     
===========================================
+ Hits           26        38      +12     
+ Misses          1         0       -1     

Impacted Files	Coverage Δ
src/index.tsx	100.00% <100.00%> (+3.70%)	:arrow_up:

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[github-actions[bot]]

:tada: This PR is included in version 8.6.0 :tada:

The release is available on:

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

Your semantic-release bot :package::rocket: