fix: 修复微信 App 支付参数异常问题

[yansongda]

fix: #940

[netlify]

✅ Deploy Preview for pay-yansongda canceled.

Name	Link
🔨 Latest commit	e428bef
🔍 Latest deploy log	https://app.netlify.com/sites/pay-yansongda/deploys/65d8190568f4ac0008bac939

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.62%. Comparing base (2ba4542) to head (e428bef).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #941   +/-   ##
=========================================
  Coverage     97.62%   97.62%           
  Complexity      897      897           
=========================================
  Files           343      343           
  Lines          6180     6180           
=========================================
  Hits           6033     6033           
  Misses          147      147           

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