HyP3: handle Sentinel-1 C/D ReferenceGranule metadata for INSAR_GAMMA (#1501)

* Handle Sentinel-1D ReferenceGranule in HyP3 metadata

* hyp3: update S1C relative orbit calculation for S1C after orbit 8018 (https://dataspace.copernicus.eu/news/2026-5-28-sentinel-1-orbital-reconfiguration-dates), with formula cofirmed in FRINGE 2026.

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Co-authored-by: Alex-Lewandowski <aflewandowski@alaska.edu>
Co-authored-by: Zhang Yunjun <yunjunz@outlook.com>