feat: getContainer support false

[zombieJ]

No description provided.

[github-actions]

🎊 PR Preview 5d34fb1 has been successfully built and deployed to https://react-component-portal-preview-pr-2.surge.sh

🕐 Build time: 108.828s

_{🤖 By surge-preview}

[codecov]

Codecov Report

Merging #2 (bc61ff2) into master (1edc1d8) will increase coverage by 2.72%.
The diff coverage is 100.00%.

❗ Current head bc61ff2 differs from pull request most recent head 5d34fb1. Consider uploading reports for the commit 5d34fb1 to get more accurate results

@@            Coverage Diff             @@
##           master       #2      +/-   ##
==========================================
+ Coverage   85.18%   87.91%   +2.72%     
==========================================
  Files           5        5              
  Lines          81       91      +10     
  Branches       19       23       +4     
==========================================
+ Hits           69       80      +11     
+ Misses         12       11       -1     

Impacted Files	Coverage Δ
src/Portal.tsx	93.10% <100.00%> (+1.79%)	⬆️
src/useDom.tsx	100.00% <100.00%> (+3.70%)	⬆️

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