chore(ci): remove pnpm installation from workflow

Eliminates unnecessary pnpm installation step in the release workflow.

Author: phodal

.github/workflows/compose-release.yml

@@ -104,10 +104,6 @@ jobs:
       - name: Grant execute permission for gradlew
         run: chmod +x gradlew
 
-      - name: Install pnpm
-        run: npm install -g [email protected]
-        working-directory: mpp-ui
-
       - name: Build Android Debug APK
         run: ./gradlew :mpp-ui:assembleDebug --no-daemon