fix: defaultValue wrongly overrode value (antd#30873)

[neotan]

To fix antd#30873. Sync-ed behaviour with Input component

[vercel]

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🔍 Inspect: https://vercel.com/react-component/input-number/DCdg6s5wgEuwug9KC9Sf61FwFNJ2
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[wzhudev]

LGTM

[codecov]

Codecov Report

Merging #335 (d7ae508) into master (8482dda) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #335   +/-   ##
=======================================
  Coverage   97.56%   97.56%           
=======================================
  Files           8        8           
  Lines         411      411           
  Branches      109      109           
=======================================
  Hits          401      401           
  Misses         10       10           

Impacted Files	Coverage Δ
src/InputNumber.tsx	98.23% <100.00%> (ø)

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[zombieJ]

+ rc-input-number@7.1.4