ci: use --no-save for matrix electron install

npm install defaults to --save, which rewrites package.json with
the matrix electron version. That leaves yarn.lock stale, and
yarn 4 checks lockfile consistency on every invocation —
including yarn tsx in the spec runner.

--no-save installs to node_modules without touching package.json.
Reverts the previous npx --no workaround.

Author: MarshallOfSound

.github/workflows/test.yml

@@ -54,7 +54,7 @@ jobs:
       - name: Install dependencies
         run: yarn install --immutable
       - name: Install Electron
-        run: npm install "electron@${{ matrix.electron-version }}"
+        run: npm install --no-save "electron@${{ matrix.electron-version }}"
       - name: Lint
         run: npm run lint
       - name: Build

spec-electron-setup/scripts/mocha-cli.ts

@@ -16,7 +16,7 @@ describe('Electron Spec Runner', function () {
 
   it('should complete Electron tests successfully', (done) => {
     const runnerPath = path.resolve(__dirname, './spec-runner.ts');
-    const child = spawn('npx', ['--no', 'tsx', `"${runnerPath}"`], { stdio: 'inherit', shell: true });
+    const child = spawn('yarn', ['tsx', `"${runnerPath}"`], { stdio: 'inherit', shell: true });
 
     child.on('close', (code) => {
       expect(code).to.equal(0, 'Electron exited with non-zero status');