fixup! fixup! tools: reuse V8 builds even without Cachix

Author: aduh95

.github/workflows/test-shared.yml

@@ -1,5 +1,5 @@
 # This action uses the following secrets:
-#   CACHIX_AUTH_TOKEN: Write access to nodejs.cachix.org – without it, the cache is read-only.
+#   NO_CACHIX_AUTH_TOKEN: Write access to nodejs.cachix.org – without it, the cache is read-only.
 name: Test Shared libraries
 
 on:
@@ -161,7 +161,7 @@ jobs:
       - uses: ./.github/actions/build-shared
         name: Build and test Node.js
         with:
-          cachix-auth-token: ${{ secrets.CACHIX_AUTH_TOKEN }}
+          cachix-auth-token: ${{ secrets.NO_CACHIX_AUTH_TOKEN }}
           extra-nix-flags: |
             --arg useSeparateDerivationForV8 true \
             ${{ endsWith(matrix.system, '-darwin') && '--arg withAmaro false --arg withLief false --arg withSQLite false --arg withFFI false --arg extraConfigFlags ''["--without-inspector" "--without-node-options"]'' \' || '\' }}
@@ -200,7 +200,7 @@ jobs:
       - name: Check if available on Cachix
         id: cachix-check
         run: |
-          echo 'HAS_WRITE_TOKEN=${{ secrets.CACHIX_AUTH_TOKEN && 'true' }}' >> "$GITHUB_OUTPUT"
+          echo 'HAS_WRITE_TOKEN=${{ secrets.NO_CACHIX_AUTH_TOKEN && 'true' }}' >> "$GITHUB_OUTPUT"
           set -x
           [ "$(curl -ISsw "%{http_code}" -o /dev/null "https://nodejs.cachix.org/$(basename ${V8_STORE_PATH%-v8-*}).narinfo")" != "200" ] ||
             echo "ALREADY_CACHED=true" >> "$GITHUB_OUTPUT"
@@ -211,7 +211,7 @@ jobs:
         if: ${{ steps.cachix-check.outputs.ALREADY_CACHED != 'true' }}
         with:
           name: nodejs
-          authToken: ${{ secrets.CACHIX_AUTH_TOKEN }}
+          authToken: ${{ secrets.NO_CACHIX_AUTH_TOKEN }}
 
       - name: Build V8 derivation
         if: ${{ steps.cachix-check.outputs.ALREADY_CACHED != 'true' }}
@@ -285,7 +285,7 @@ jobs:
       - uses: ./.github/actions/build-shared
         name: Build and test Node.js
         with:
-          cachix-auth-token: ${{ secrets.CACHIX_AUTH_TOKEN }}
+          cachix-auth-token: ${{ secrets.NO_CACHIX_AUTH_TOKEN }}
           # Override just the `openssl` attr of the default shared-lib set with
           # the matrix-selected nixpkgs attribute (e.g. `openssl_3_6`). All
           # other shared libs (brotli, cares, libuv, …) keep their defaults.