version release: fix finalize isLatest check (#511)

Author: gmarzot

.github/workflows/version-release.yml

@@ -454,8 +454,8 @@ jobs:
             xargs -0 -n1 -P 6 -I{} gh release upload "$TAG" --repo "$REPO" {} --clobber
 
   # ════════════════════════════════════════════════════════════════════════════
-  # Finalize: mark release as latest once all uploads succeeded.
-  # Tolerates portable-build being skipped (has_portable=false).
+  # Finalize: confirm the release is fully published once all uploads
+  # succeeded. Tolerates portable-build being skipped (has_portable=false).
   # ════════════════════════════════════════════════════════════════════════════
 
   finalize:
@@ -487,4 +487,8 @@ jobs:
           # would mark a hotfix patch from a release/vM.m branch as
           # latest even when a newer vM.(m+1) line exists.
           echo "Released: $TAG"
-          gh release view "$TAG" --repo "$REPO" --json isLatest,isPrerelease,name --jq '"isLatest=\(.isLatest) isPrerelease=\(.isPrerelease) name=\(.name)"'
+          # isLatest is not a --json field on `gh release view` (only on
+          # `gh release list`), so derive it from the releases/latest API.
+          gh release view "$TAG" --repo "$REPO" --json isPrerelease,name --jq '"isPrerelease=\(.isPrerelease) name=\(.name)"'
+          LATEST=$(gh api "repos/$REPO/releases/latest" --jq .tag_name)
+          echo "isLatest=$([ "$LATEST" = "$TAG" ] && echo true || echo false) (latest=$LATEST)"