chore: 移除 pnpm 二进制的缓存步骤，简化工作流程

npm-install/action.yml

@@ -123,16 +123,6 @@ runs:
         echo "使用hash: ${CACHE_HASH}"
         echo "缓存key: ${CACHE_KEY}"
 
-    - name: 缓存 pnpm 二进制 (Corepack)
-      if: inputs.package-manager == 'pnpm'
-      uses: actions/cache@v4
-      with:
-        path: |
-          ~/.cache/corepack
-        key: ${{ runner.os }}-corepack-pnpm-${{ inputs.pnpm-version }}
-        restore-keys: |
-          ${{ runner.os }}-corepack-pnpm-
-
     - name: 确保 pnpm 可用
       if: inputs.package-manager == 'pnpm'
       uses: pnpm/action-setup@v4