feat: ios级联不能点击问题修复

[gaoting]

Checklist

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• Fix linting errors
• Tests have been added / updated (or snapshots)

Change information

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[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
varlet	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 19, 2023 2:51pm
varlet-ui-playground	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 19, 2023 2:51pm

[codecov]

Codecov Report

Merging #1047 (fdd32b4) into dev (8f6ddc5) will decrease coverage by 0.05%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##              dev    #1047      +/-   ##
==========================================
- Coverage   95.98%   95.94%   -0.05%     
==========================================
  Files         325      325              
  Lines       21331    21340       +9     
  Branches     1423     1427       +4     
==========================================
  Hits        20475    20475              
- Misses        810      819       +9     
  Partials       46       46              

Impacted Files	Coverage Δ
packages/varlet-ui/src/picker/Picker.vue	96.62% <100.00%> (-0.43%)	⬇️

... and 2 files with indirect coverage changes