chore: fix pnpm path in rails and memory issue during vite build (#10366)

- Fix pnpm path in rails
- Fix memory issue during vite build


Fixes https://github.com/chatwoot/chatwoot/issues/10356

docker/dockerfiles/rails.Dockerfile

@@ -1,5 +1,8 @@
 FROM chatwoot:development
 
+ENV PNPM_HOME="/root/.local/share/pnpm"
+ENV PATH="$PNPM_HOME:$PATH"
+
 RUN chmod +x docker/entrypoints/rails.sh
 
 EXPOSE 3000