[Matrix] Convert column-vector ops feeding dot product to row-vectors. (#72647)

Generalize the logic used to convert column-vector ops to row-vectors to
support converting chains of operations.

A potential next step is to further generalize this to convert
column-vector ops to row-vector ops in general, not just for operands of
dot products. Dot-product handling would then be driven by the general
conversion, rather than the other way around.

PR: https://github.com/llvm/llvm-project/pull/72647