[llvm] [MLIR] Apply clang-tidy fixes for readability-container-size-empty in VectorTransforms.cpp (NFC) (PR #156358)

[Sergei Barannikov via llvm-commits]

s-barannikov wrote:

* **#156364** <a href="https://app.graphite.dev/github/pr/llvm/llvm-project/156364?utm_source=stack-comment-icon" target="_blank"><img src="https://static.graphite.dev/graphite-32x32-black.png" alt="Graphite" width="10px" height="10px"/></a>
* **#156363** <a href="https://app.graphite.dev/github/pr/llvm/llvm-project/156363?utm_source=stack-comment-icon" target="_blank"><img src="https://static.graphite.dev/graphite-32x32-black.png" alt="Graphite" width="10px" height="10px"/></a>
* **#156362** <a href="https://app.graphite.dev/github/pr/llvm/llvm-project/156362?utm_source=stack-comment-icon" target="_blank"><img src="https://static.graphite.dev/graphite-32x32-black.png" alt="Graphite" width="10px" height="10px"/></a>
* **#156361** <a href="https://app.graphite.dev/github/pr/llvm/llvm-project/156361?utm_source=stack-comment-icon" target="_blank"><img src="https://static.graphite.dev/graphite-32x32-black.png" alt="Graphite" width="10px" height="10px"/></a>
* **#156360** <a href="https://app.graphite.dev/github/pr/llvm/llvm-project/156360?utm_source=stack-comment-icon" target="_blank"><img src="https://static.graphite.dev/graphite-32x32-black.png" alt="Graphite" width="10px" height="10px"/></a>
* **#156359** <a href="https://app.graphite.dev/github/pr/llvm/llvm-project/156359?utm_source=stack-comment-icon" target="_blank"><img src="https://static.graphite.dev/graphite-32x32-black.png" alt="Graphite" width="10px" height="10px"/></a>
* **#156358** <a href="https://app.graphite.dev/github/pr/llvm/llvm-project/156358?utm_source=stack-comment-icon" target="_blank"><img src="https://static.graphite.dev/graphite-32x32-black.png" alt="Graphite" width="10px" height="10px"/></a> 👈 <a href="https://app.graphite.dev/github/pr/llvm/llvm-project/156358?utm_source=stack-comment-view-in-graphite" target="_blank">(View in Graphite)</a>
* `main`


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https://github.com/llvm/llvm-project/pull/156358