feat(locale): add 8px margin between icon and label for SelectLang

[qiuhongbingo]

Before:

After:

[codecov]

Codecov Report

Merging #557 (2075ff9) into master (2aad730) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #557   +/-   ##
=======================================
  Coverage   46.01%   46.01%           
=======================================
  Files          67       67           
  Lines        1595     1595           
  Branches      435      435           
=======================================
  Hits          734      734           
  Misses        860      860           
  Partials        1        1           

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[ycjcl868]

不应该是 feat，要么是 chore 或 fix，发了个 minor 版本😂