chore: Put origin img size to fill the box

[zombieJ]

🤔 This is a ...

• New feature
• Bug fix
• Site / document update
• Component style update
• TypeScript definition update
• Refactoring
• Code style optimization
• Test Case
• Branch merge
• Other (about what?)

🔗 Related issue link

close #18989

💡 Background and solution

Default setting the img of file will not cut before:

Form

To

📝 Changelog

Language	Changelog
🇺🇸 English	💄 Adjust Upload picture-card mode picture display style to fill the picture box.
🇨🇳 Chinese	💄 调整 Upload picture-card 模式下，图片展示样式为填充整个图片框。

☑️ Self Check before Merge

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• TypeScript definition is updated/provided or not needed
• Changelog is provided or not needed

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[afc163]

/rebase

[codecov]

Codecov Report

Merging #18990 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #18990   +/-   ##
=======================================
  Coverage   96.93%   96.93%           
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  Files         281      281           
  Lines        7557     7557           
  Branches     2068     2110   +42     
=======================================
  Hits         7325     7325           
  Misses        230      230           
  Partials        2        2

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