Adds basic integration tests for `vector.contract` for the dot product and matvec operations. These tests exercise scalable vectors. Depends on https://github.com/llvm/llvm-project/pull/69845
Adds basic integration tests for `vector.contract` for the dot product and matvec operations. These tests exercise scalable vectors. Depends on https://github.com/llvm/llvm-project/pull/69845