Allow passing custom size to Array-like make_tracer methods

[giordano]

This allows creating traced arrays with shape different than the original data, without having to add extra reshape instructions. Ref: #1669 (comment).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 69.91%. Comparing base (b39a1fc) to head (3b91d3a).
⚠️ Report is 15 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1712      +/-   ##
==========================================
+ Coverage   68.16%   69.91%   +1.75%     
==========================================
  Files         109      113       +4     
  Lines       11779    12473     +694     
==========================================
+ Hits         8029     8721     +692     
- Misses       3750     3752       +2     

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[wsmoses]

I'm not convinced this is the best design. It feels like it would be better to specialize fixedsizeareays to retain the shape information than to pipe through arrays for all trace overrides. Eg I'm unclear who other than fixed size arrays would need (and also am somewhat worried about the soundness of an outer array propagation into)