refactor: unify pnpm version management with packageManager field (#23943)

.github/workflows/style.yml

       - name: Install pnpm
         uses: pnpm/action-setup@v4
         with:
-          version: 10
+          package_json_file: web/package.json
           run_install: false
 
       - name: Setup NodeJS
 
       - name: Web dependencies
         if: steps.changed-files.outputs.any_changed == 'true'
+        working-directory: ./web
         run: pnpm install --frozen-lockfile
 
       - name: Web style check
         if: steps.changed-files.outputs.any_changed == 'true'
+        working-directory: ./web
         run: pnpm run lint
 
   docker-compose-template:

.github/workflows/translate-i18n-base-on-english.yml

       - name: Install pnpm
         uses: pnpm/action-setup@v4
         with:
-          version: 10
+          package_json_file: web/package.json
           run_install: false
 
       - name: Set up Node.js
 
       - name: Install dependencies
         if: env.FILES_CHANGED == 'true'
+        working-directory: ./web
         run: pnpm install --frozen-lockfile
 
       - name: Generate i18n translations
         if: env.FILES_CHANGED == 'true'
+        working-directory: ./web
         run: pnpm run auto-gen-i18n ${{ env.FILE_ARGS }}
 
       - name: Create Pull Request

.github/workflows/web-tests.yml

         if: steps.changed-files.outputs.any_changed == 'true'
         uses: pnpm/action-setup@v4
         with:
-          version: 10
+          package_json_file: web/package.json
           run_install: false
 
       - name: Setup Node.js
 
       - name: Install dependencies
         if: steps.changed-files.outputs.any_changed == 'true'
+        working-directory: ./web
         run: pnpm install --frozen-lockfile
 
       - name: Run tests
         if: steps.changed-files.outputs.any_changed == 'true'
+        working-directory: ./web
         run: pnpm test

web/Dockerfile

 # RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories
 
 RUN apk add --no-cache tzdata
-RUN npm install -g pnpm@10.13.1
+RUN corepack enable
 ENV PNPM_HOME="/pnpm"
 ENV PATH="$PNPM_HOME:$PATH"
 
 COPY package.json .
 COPY pnpm-lock.yaml .
 
+# Use packageManager from package.json
+RUN corepack install
+
 # if you located in China, you can use taobao registry to speed up
 # RUN pnpm install --frozen-lockfile --registry https://registry.npmmirror.com/
 

web/package.json

   "name": "dify-web",
   "version": "1.7.2",
   "private": true,
+  "packageManager": "pnpm@10.14.0",
   "engines": {
     "node": ">=v22.11.0"
   },