[clang] [clang][Sema] fix crash on __type_pack_element with dependent packs (GH180307) (PR #180407)

[via cfe-commits]

Serosh-commits wrote:

> Needs a few more tests, and I think a bunch of the moved dependence checks should be reverted

@ojhunt i have done it let me know what more i can fix or does it look good to u if not then let me know where i am wrong 

https://github.com/llvm/llvm-project/pull/180407