[PASS] Improve IR pass for fine-grained dataflow generation support using .to

[hecmay]

• [x] Example of building Conv 1D SA (weight stationary)
• [x] Example of building Conv 1D SA (output stationary)
• [x] Example of building MatMul 2D SA (output stationary)

[hecmay]

Not fully sure why this happened -- the test_stencil_stream test case passes locally but in the CI I kept getting "SODA error".