IntelPython / dpnp / 24770744137

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Fix `matrix_rank` for empty matrices (#2853)

This PR fixes `dpnp.linalg.matrix_rank` to handle empty matrices (arrays
with zero-size dimensions) without raising a `ValueError`.

Previously, calling `matrix_rank` on empty arrays would fail:
```python
import dpnp as np

dpnp.linalg.matrix_rank(np.zeros((0, 0)))
# ValueError: reduction cannot be performed over zero-size axes
```

The PR also adds comprehensive tests coverage, including testing both
normal and Hermitian modes.

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