Reject invalid DataColumnSidecar for zero blobs
#3953
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tests/core/pyspec/eth2spec/test/eip7594/unittests/test_networking.py
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Co-authored-by: Hsiao-Wei Wang <hsiaowei.eth@gmail.com>
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This PR adds an
assert len(sidecar.kzg_commitments) > 0check forDataColumnSidecarobjects. There should never be a situation where aDataColumnSidecaris propagated for a block with zero blobs.In doing so, this PR creates a new
verify_data_column_sidecarfunction and moves the asserts fromverify_data_column_sidecar_kzg_proofsinto it. Plus a bunch of tests.