Fix bazel build failure (introduced in #157507) (#158268)

Author: basioli-k

utils/bazel/llvm-project-overlay/mlir/test/Dialect/BUILD.bazel

@@ -10,6 +10,7 @@ package(default_visibility = ["//visibility:public"])
         srcs = [src],
         data = [
             "Vector/td/unroll-elements.mlir",
+            "Vector/td/xfer-drop-unit-dims.mlir",
             "Vector/vector-sink-transform.mlir",
             "//llvm:llvm-symbolizer",
             "//mlir:mlir-opt",
@@ -35,6 +36,7 @@ package(default_visibility = ["//visibility:public"])
             "Transform/*-symbol-decl-and-schedule.mlir",
             "Transform/include/**/*.mlir",
             "Vector/td/unroll-elements.mlir",
+            "Vector/td/xfer-drop-unit-dims.mlir",
             "Vector/vector-sink-transform.mlir",
         ],
     )