Remove flag relation select (#3588)

* Remove feature flag on relation and select

* Move packages back to twenty-server to enable smaller build without using nx

* Fix package.json

packages/twenty-docker/prod/twenty-server/Dockerfile

@@ -8,9 +8,11 @@ COPY ./.yarnrc.yml .
 COPY ./.yarn/releases /app/.yarn/releases
 COPY ./tools/eslint-rules /app/tools/eslint-rules
 COPY ./packages/twenty-server /app/packages/twenty-server
-RUN yarn
 
-RUN yarn nx build twenty-server
+WORKDIR /app/packages/twenty-server
+RUN yarn workspaces focus
+
+RUN yarn build
 
 WORKDIR /app/packages/twenty-server