fix(antd/next): array-collapse onAdd function nullable issue

[McDaddy]

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What have you changed?

不好意思没注意到onAdd的类型可能是undefined，但我很奇怪，为什么我的编辑器显示的类型是非空，但是看IArrayBaseProps的定义却都是optiional的

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (cce787c) 96.58% compared to head (3c2a917) 96.58%.

Additional details and impacted files

@@              Coverage Diff              @@
##           formily_next    #3795   +/-   ##
=============================================
  Coverage         96.58%   96.58%           
=============================================
  Files               152      152           
  Lines              6669     6669           
  Branches           1856     1856           
=============================================
  Hits               6441     6441           
  Misses              200      200           
  Partials             28       28           

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