[libcxxabi] [llvm] [llvm-cxxfilt] Added the option --no-params (PR #75348)

[Fangrui Song via llvm-commits]

MaskRay wrote:

Can you edit the first comment (which will become the commit message) to include the motivation and some background about the feature? I am not very familiar with mangling but I know that there is quite some complexity involving dependent types, [template arguments](https://itanium-cxx-abi.github.io/cxx-abi/abi.html#mangle.template-arg), etc. Giving some examples will help.

https://github.com/llvm/llvm-project/pull/75348