Fix QgsRasterLayer and QgsRasterBlock as_numpy methods #60275
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This PR addresses two issues:
QgsRasterLayer.as_numpy(use_masking=True)previously did not return a masked array.QgsRasterBlock.as_numpy()did not use the correct fill value.The updates ensure:
QgsRasterLayer.as_numpy(use_masking=True)now returns masked arrays usingnumpy.ma.stack().QgsRasterBlock.as_numpy()correctly applies the setnoDataValuefor filling, defaulting to 0 if no value is set.Fixes #60205.