Skip findinmap resolution when hitting a Sub

[kddejong]

Issue #, if available:
fix #3847
Description of changes:

• Skip findinmap resolutions when using a Sub

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[codecov]

Codecov Report

Attention: Patch coverage is 88.23529% with 2 lines in your changes missing coverage. Please review.

Project coverage is 93.78%. Comparing base (19192ef) to head (0fff407).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/cfnlint/context/context.py	66.66%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3856      +/-   ##
==========================================
- Coverage   93.78%   93.78%   -0.01%     
==========================================
  Files         364      364              
  Lines       12463    12476      +13     
  Branches     2556     2561       +5     
==========================================
+ Hits        11689    11701      +12     
  Misses        429      429              
- Partials      345      346       +1     

Flag	Coverage Δ
unittests	93.74% <88.23%> (-0.01%)	⬇️

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