[RootCanal] Fix uninitialized host supported features

  // Host Supported Features (Vol 2, Part C § 3.3 Feature Mask Definition).

  // Page 1 of the LMP feature mask.

  uint64_t host_supported_features_;

  uint64_t host_supported_features_{};

  bool le_host_support_{false};

  bool secure_simple_pairing_host_support_{false};

  bool secure_connections_host_support_{false};

  // Le Host Supported Features (Vol 4, Part E § 7.8.3).

  // Specifies the bits indicating Host support.

  uint64_t le_host_supported_features_;

  uint64_t le_host_supported_features_{};

  bool connected_isochronous_stream_host_support_{false};

  bool connection_subrating_host_support_{false};