[TTI]Fallback to SingleSrcPermute shuffle kind, if no direct estimation for

extract subvector.

Many targets do not have cost for extractsubvector shuffle kind, but
have the costs for single source permute. If there are no costs
estimation for extractsubvector, better to switchto single source
permute for better cost estimation.

Reviewers: RKSimon, davemgreen, arsenm

Reviewed By: RKSimon

Pull Request: https://github.com/llvm/llvm-project/pull/79837