[mlir][vector] Add more tests for ConvertVectorToLLVM (6/n) (#111121)

Adds tests with scalable vectors for the Vector-To-LLVM conversion pass.
Covers the following Ops:
  * `vector.insert_strided_slice`

With this change, for every test with fixed-width vectors, there should
be a corresponding example with scalable vectors (for
`vector.insert_strided_slice`). In addition:
  * Test function names are updated to more accurately reflect the case
    being exercised (e.g. `@insert_strided_index_slice1` ->
    `@insert_strided_index_slice_index_2d_into_3d`)
  * For consistency, took the liberty of updating some of the function
    names for `vector.extract_strided_slice`
  * `@insert_strided_slice_scalable` is effectively replaced with
    `@insert_strided_slice_f32_2d_into_3d_scalable`

0 files changed, 0 insertions, 0 deletions