fix(TreeSelect): calculate all checked value only when treeCheckedStrategy=all, close#3936

[lakerswgq]

close #3936

[codecov]

Codecov Report

Merging #3938 (9ed19af) into master (3bd694e) will decrease coverage by 0.00%.
The diff coverage is 0.00%.

❗ Current head 9ed19af differs from pull request most recent head f780d30. Consider uploading reports for the commit f780d30 to get more accurate results

@@            Coverage Diff             @@
##           master    #3938      +/-   ##
==========================================
- Coverage   10.28%   10.28%   -0.01%     
==========================================
  Files         304      304              
  Lines       17847    17848       +1     
  Branches     5385     5386       +1     
==========================================
  Hits         1836     1836              
- Misses      16006    16007       +1     
  Partials        5        5              

Impacted Files	Coverage Δ
src/tree-select/tree-select.jsx	1.99% <0.00%> (-0.01%)	⬇️

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