Fix(InputItem): Adjust the caret position of the formatted value

[zack24q]

尝试优化受控组件在变更内容后，光标位置变到最右的问题 (#2840 #1553 #1208 #1162 #1165 #810)

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Codecov Report

❗ No coverage uploaded for pull request base (master@0c3be4a). Click here to learn what that means.
The diff coverage is 50%.

@@            Coverage Diff            @@
##             master    #2854   +/-   ##
=========================================
  Coverage          ?   60.12%           
=========================================
  Files             ?       92           
  Lines             ?     2237           
  Branches          ?      639           
=========================================
  Hits              ?     1345           
  Misses            ?      886           
  Partials          ?        6

Flag	Coverage Δ
#web	60.12% <50%> (?)

Impacted Files	Coverage Δ
components/input-item/index.tsx	60.58% <50%> (ø)

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