IAM: Allow CF to delete InstanceProfile with existing role

[bblommers]

See #7381

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.77%. Comparing base (9aef694) to head (9a6e5b9).
Report is 75 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7431      +/-   ##
==========================================
- Coverage   95.88%   95.77%   -0.11%     
==========================================
  Files         843      849       +6     
  Lines       82578    83618    +1040     
==========================================
+ Hits        79178    80086     +908     
- Misses       3400     3532     +132     

Flag	Coverage Δ
servertests	32.30% <33.33%> (-0.23%)	⬇️
unittests	95.74% <100.00%> (-0.11%)	⬇️

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[github-actions]

This is now part of moto >= 5.0.3.dev46