Push notifications contain message content

### Description Push notifications are still including message content even though include_content is explicitly set to false in the Synapse configuration. ### Steps to reproduce We have configured the following push notification settings on the server: push: enabled: true include_content: false group_unread_count_by_room: false jitter_delay: 2s However, the include_content setting does not seem to work as expected. Push notifications in Element X are still delivered with message content. According to the documentation: https://element-hq.github.io/synapse/latest/usage/configuration/config_documentation.html#push-1 On iPhone, notifications should only indicate that a message has been received and who it is from, without including the message content. Outcome What did you expect? Push notifications should not include message content when include_content is set to false. What happened instead? Push notifications still include message content despite the configuration. ### Homeserver matrix.org ### Synapse Version {"server_version":"1.151.0"} ### Installation Method Docker (matrixdotorg/synapse) ### Database PostgreSQL 16 ### Workers I don't know ### Platform synapse: image: matrixdotorg/synapse:latest container_name: matrix-synapse restart: unless-stopped ports: - 127.0.0.1:8008:8008 # Client API (expose to reverse proxy) volumes: - ./synapse/data:/data - ./synapse/config/homeserver.yaml:/data/homeserver.yaml:ro environment: - SYNAPSE_CONFIG_PATH=/data/homeserver.yaml - UID=0 - GID=0 networks: - matrix depends_on: postgres: condition: service_healthy healthcheck: test: ["CMD", "curl", "-f", "http://localhost:8008/health"] interval: 30s timeout: 10s retries: 3 ### Configuration push: enabled: true include_content: false group_unread_count_by_room: false jitter_delay: 2s