fix(mock): re-invoke reply callback for persistent mocks

[mcollina]

Resolve reply option callbacks without replacing mockDispatch.data, so
the callback is preserved and re-invoked for every matching request on
persistent (.persist()) or .times(n) interceptors.

Regression introduced in #5367.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 90.90909% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 93.43%. Comparing base (c8d80e6) to head (2320f5b).

Files with missing lines	Patch %	Lines
lib/mock/mock-utils.js	90.90%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5650      +/-   ##
==========================================
+ Coverage   93.42%   93.43%   +0.01%     
==========================================
  Files         110      110              
  Lines       38710    38711       +1     
==========================================
+ Hits        36165    36170       +5     
+ Misses       2545     2541       -4     

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