fix handling for when Annotated is inside another type; namely list[Annotated[...]].

[BrianPugh]

Addresses #287 .

[codecov]

Codecov Report

Attention: Patch coverage is 94.73684% with 1 line in your changes missing coverage. Please review.

Project coverage is 93.83%. Comparing base (2b6c5ea) to head (765e723).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
cyclopts/argument.py	94.44%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #289      +/-   ##
==========================================
- Coverage   93.84%   93.83%   -0.01%     
==========================================
  Files          26       26              
  Lines        3005     3019      +14     
  Branches      633      636       +3     
==========================================
+ Hits         2820     2833      +13     
  Misses         90       90              
- Partials       95       96       +1     

Flag	Coverage Δ
unittests	93.83% <94.73%> (-0.01%)	⬇️

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