MLIR Build warnings

[crockeea]

Two mlir files (tests/Examples/common/mnist.mlir and tests/Examples/common/dot_product_8f.mlir are generating warnings during the build process.

INFO: From Action tests/Examples/openfhe/ckks/mnist/mnist_openfhe_heir_opt.mlir:
tests/Examples/common/mnist.mlir:23:22: error: failed to fetch layout attribute for input
    %broadcasted_3 = linalg.broadcast ins(%mapped : tensor<512xf32>) outs(%8 : tensor<1x512xf32>) dimensions = [0]
                     ^
tests/Examples/common/mnist.mlir:23:22: note: see current operation: %24 = "tensor.expand_shape"(<<UNKNOWN SSA VALUE>>) <{reassociation = [[0, 1]], static_output_shape = array<i64: 1, 512>}> : (tensor<512xf32>) -> tensor<1x512xf32>
tests/Examples/common/mnist.mlir:42:23: error: failed to fetch layout attribute for input
    %broadcasted_11 = linalg.broadcast ins(%mapped_7 : tensor<10xf32>) outs(%19 : tensor<1x10xf32>) dimensions = [0]
                      ^
tests/Examples/common/mnist.mlir:42:23: note: see current operation: %26 = "tensor.expand_shape"(<<UNKNOWN SSA VALUE>>) <{reassociation = [[0, 1]], static_output_shape = array<i64: 1, 10>}> : (tensor<10xf32>) -> tensor<1x10xf32>

...

INFO: From Action tests/Examples/lattigo/ckks/dot_product_8f_debug/dot_product_8f_debug_heir_opt.mlir:
tests/Examples/common/dot_product_8f.mlir:8:10: error: Not enough data for result
    %4 = arith.addf %iter, %3 : f32
         ^
tests/Examples/common/dot_product_8f.mlir:8:10: note: see current operation: %25 = "arith.mulf"(%24, %0) <{fastmath = #arith.fastmath<none>}> : (tensor<1x2048xf32>, tensor<1x2048xf32>) -> tensor<1x2048xf32>

[asraa]

Right - i have this on my radar to fix when I have some time to do clean up... maybe i'll do it this afternoon.

i think this is just happening from not materializing some attributes properly during that pass..