[llvm] [TypeProf][ICP]Allow vtable-comparison as long as vtable count is comparable with function count for each candidate (PR #106260)

[David Li via llvm-commits]

https://github.com/david-xl approved this pull request.

I suppose the icpvtablePercentage threshold will need to be tuned for SamplePGO in the future (given the mismatched profiling source). For now it is ok.

https://github.com/llvm/llvm-project/pull/106260