fix: route push problem with subscription in prod mode

[sorrycc]

Checklist

• npm test passes
• tests are included
• documentation is changed or added
• commit message follows commit guidelines

Description of change

• close router.push 跳转页面会触发本页面的redux的subscriptions监听,而且pathname不是目标地址而是现在的 #2220
• close dva2.6以上版本使用router进行页面跳转时history.listen陷入死循环 #2130

[coveralls]

Coverage decreased (-0.2%) to 86.429% when pulling 31f06cc on fix/subscription-execute-in-prod into 4d3ed5e on master.

[codecov-io]

Codecov Report

Merging #2234 into master will decrease coverage by 0.5%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master    #2234      +/-   ##
==========================================
- Coverage   86.32%   85.82%   -0.51%     
==========================================
  Files          18       18              
  Lines         512      515       +3     
  Branches      111      113       +2     
==========================================
  Hits          442      442              
- Misses         56       59       +3     
  Partials       14       14

Impacted Files	Coverage Δ
packages/dva/src/index.js	63.79% <0%> (-3.48%)	⬇️

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