fix: button with icon and inline (#2742)

[zack24q]

First of all, thank you for your contribution! :-)

Please makes sure that these checkboxes are checked before submitting your PR, thank you!

• Make sure that you follow antd's code convention.
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Extra checklist:

if isBugFix :

• Make sure that you add at least one unit test for the bug which you had fixed.

elif isNewFeature :

• Update API docs for the component.
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This change is 

[codecov]

Codecov Report

Merging #2822 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2822   +/-   ##
=======================================
  Coverage   59.37%   59.37%           
=======================================
  Files          92       92           
  Lines        2208     2208           
  Branches      628      628           
=======================================
  Hits         1311     1311           
  Misses        891      891           
  Partials        6        6

Flag	Coverage Δ
#web	59.37% <ø> (ø)	⬆️

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[doxiaodong]

ok