fix(KAN-58): select macOS runner from repository variable

.github/workflows/macos-release.yml

@@ -37,7 +37,6 @@ jobs:
     outputs:
       commit: ${{ steps.ref.outputs.commit }}
       tag: ${{ steps.ref.outputs.tag }}
-      runner: ${{ steps.ref.outputs.runner }}
     steps:
       - name: Check out repository
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
@@ -64,7 +63,7 @@ jobs:
           commit="$(git rev-parse --verify "refs/tags/$tag^{commit}")"
           git merge-base --is-ancestor "$commit" origin/main || { echo 'Release tag must belong to main.' >&2; exit 1; }
           git checkout --detach "$commit"
-          printf 'commit=%s\ntag=%s\nrunner=%s\n' "$commit" "$tag" "$MACOS_RUNNER" >> "$GITHUB_OUTPUT"
+          printf 'commit=%s\ntag=%s\n' "$commit" "$tag" >> "$GITHUB_OUTPUT"
 
       - name: Setup Node.js
         uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
@@ -81,7 +80,8 @@ jobs:
   release:
     name: Sign, notarize, verify and publish macOS
     needs: prepare
-    runs-on: ${{ needs.prepare.outputs.runner }}
+    # Gitea resolves runner labels before outputs from prepare are available.
+    runs-on: ${{ vars.MACOS_RUNNER }}
     timeout-minutes: 120
     env:
       RELEASE_TAG: ${{ needs.prepare.outputs.tag }}