chore(ci): use installed yarn

Author: alpha0010

.github/workflows/node.js.yml

@@ -6,6 +6,9 @@ on:
   pull_request:
     branches: [ master ]
 
+env:
+  YARN_IGNORE_PATH: 1
+
 jobs:
   build:
 
@@ -24,9 +27,9 @@ jobs:
     - uses: actions/setup-node@v4
       with:
         node-version: 24
-    - run: YARN_IGNORE_PATH=1 yarn
+    - run: yarn
       if: steps.cache-node.outputs.cache-hit != 'true'
-    - run: YARN_IGNORE_PATH=1 yarn lint
-    - run: YARN_IGNORE_PATH=1 yarn typecheck
-    - run: YARN_IGNORE_PATH=1 yarn test --coverage
-    - run: YARN_IGNORE_PATH=1 yarn prepare
+    - run: yarn lint
+    - run: yarn typecheck
+    - run: yarn test --coverage
+    - run: yarn prepare