Clarify that FLOAT4E2M1 can be in int32_data (#6640) #133

Job	Run time
Test ubuntu-24.04, 3.13, Internal, debug=1, onnx_ml=1, doc=1	10m 56s
Test ubuntu-24.04, 3.12, Internal, debug=1, onnx_ml=1, doc=1	11m 17s
Test ubuntu-24.04, 3.11, External, debug=0, onnx_ml=1, doc=0	4m 16s
Test ubuntu-24.04, 3.10, Internal, debug=0, onnx_ml=0, doc=0	10m 28s
Test ubuntu-24.04, 3.9, External, debug=0, onnx_ml=1, doc=0	7m 10s
Test windows-latest, 3.13, Internal, debug=1, onnx_ml=1, doc=1	18m 49s
Test windows-latest, 3.12, Internal, debug=1, onnx_ml=1, doc=1	16m 43s
Test windows-latest, 3.11, External, debug=0, onnx_ml=1, doc=0	20m 42s
Test windows-latest, 3.10, Internal, debug=0, onnx_ml=0, doc=0	18m 50s
Test windows-latest, 3.9, External, debug=0, onnx_ml=1, doc=0	19m 13s
Test macos-latest, 3.13, Internal, debug=1, onnx_ml=1, doc=1	5m 31s
Test macos-latest, 3.12, Internal, debug=1, onnx_ml=1, doc=1	5m 52s
Test macos-latest, 3.11, External, debug=0, onnx_ml=1, doc=0	6m 53s
Test macos-latest, 3.10, Internal, debug=0, onnx_ml=0, doc=0	6m 18s
Test macos-latest, 3.9, External, debug=0, onnx_ml=1, doc=0	5m 31s
	2h 48m 29s

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