Try CNN -> ViT assumption for IR insertion

[goodsong81]

• Update method setting logic to try CNN -> ViT assumption
• Update func test to use 'None' method to guess inside
• Update xfail test cases
  • Some models are actually CNNs
  • Some ViT-like models are working in CNN mode

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.97%. Comparing base (c497c01) to head (c3e73e1).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop      #48      +/-   ##
===========================================
+ Coverage    91.93%   91.97%   +0.03%     
===========================================
  Files           19       19              
  Lines         1227     1233       +6     
===========================================
+ Hits          1128     1134       +6     
  Misses          99       99              

Flag	Coverage Δ
dev-py310	91.97% <100.00%> (+0.03%)	⬆️

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