[Transform] re-enable page size rest test after backport #74651 (#74927)

re-enable test after backport of #74651

Author: Hendrik Muhs

x-pack/plugin/build.gradle

@@ -167,7 +167,6 @@ tasks.named("yamlRestCompatTest").configure {
     'transform/transforms_cat_apis/Test cat transform stats hiding headers',
     'transform/transforms_cat_apis/Test cat transform stats with column selection',
     'transform/transforms_cat_apis/Test cat transform stats with continuous transform',
-    'transform/transforms_crud/Test put config with invalid pivot size', // disabled until backport of #74651 has finished
     'vectors/10_dense_vector_basic/Deprecated function signature',
     'vectors/30_sparse_vector_basic/Cosine Similarity',
     'vectors/30_sparse_vector_basic/Deprecated function signature',