Unfortunately, not.
But for sure, you'll need filters working on float values to do this.
So, first, set OutputMode=2 on the ConvertYUVtoLinearRGB.
If ManualColorMatrix worked on float values, it would have been exactly what you need just after.
Your coeff matrix on your previous post, you get them reverting the following 709 -> 2020 matrix provided in rec2087 ?
0.6274 0.3293 0.0433
0.0691 0.9195 0.0114
0.0164 0.0880 0.8956
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