[bugfix] DatetimePicker: change event trigger timing

[chenjiahan]

No description provided.

[codecov-io]

Codecov Report

Merging #1370 into dev will increase coverage by 0.11%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##              dev    #1370      +/-   ##
==========================================
+ Coverage   86.39%   86.51%   +0.11%     
==========================================
  Files          96       96              
  Lines        1470     1468       -2     
  Branches      291      290       -1     
==========================================
  Hits         1270     1270              
+ Misses        180      178       -2     
  Partials       20       20

Impacted Files	Coverage Δ
packages/datetime-picker/index.vue	51.3% <0%> (+0.87%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 0afbd92...a03ef77. Read the comment docs.