feat(ImagePreview): fit window resize

[chenjiahan]

No description provided.

[codecov-commenter]

Codecov Report

Merging #6760 into dev will increase coverage by 0.09%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##              dev    #6760      +/-   ##
==========================================
+ Coverage   91.03%   91.13%   +0.09%     
==========================================
  Files         175      175              
  Lines        4664     4668       +4     
  Branches      279      277       -2     
==========================================
+ Hits         4246     4254       +8     
+ Misses        379      377       -2     
+ Partials       39       37       -2     

Impacted Files	Coverage Δ
src/image-preview/ImagePreview.js	96.96% <100.00%> (+0.54%)	⬆️
src/image-preview/ImagePreviewItem.js	100.00% <100.00%> (+2.06%)	⬆️
src/mixins/bind-event.js	100.00% <100.00%> (ø)
src/stepper/index.js	100.00% <0.00%> (ø)
src/uploader/index.js	96.42% <0.00%> (ø)

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