[production/RRFS.v1] RRFS restart reproducibility fix#315

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JiliDong-NOAA wants to merge 3 commits intoufs-community:production/RRFS.v1from

JiliDong-NOAA:sigmab_restart_fix

Commits on May 21, 2025

fix to restore saSAS reproducibility when using progsigma
jili dong
committed

Commits on Aug 26, 2025

fix gf_coldstart logic
jili dong
committed

Commits on Oct 15, 2025

fix sigmab_coldstart for C3 convection
jili dong
committed