[clang-tidy] performance-for-range-copy: Don't trigger on implicit type conversions.

This disables the check for false positive cases where implicit type conversion
through either an implicit single argument constructor or a member conversion
operator is triggered when constructing the loop variable.

Fix the test cases that meant to cover these cases.

Differential Revision: https://reviews.llvm.org/D97577

Reviewed-by: hokein