message: Knobs are supported in MVFST_EXPERIMENTAL too
  Summary: Check for MVFST_EXPERIMENTAL when deciding whether knob frames are supported
diff: @@ -3221,7 +3221,10 @@ bool QuicTransportBase::isKnobSupported() const {
  // support and incorporate it into the check, such that if the QUIC version
  // increases/changes, this method will still continue to work, based on the
  // transport parameter setting.
  - return (conn_->version && (*(conn_->version) == QuicVersion::MVFST));
  + return (
  + conn_->version &&
  + (*(conn_->version) == QuicVersion::MVFST ||
  + *(conn_->version) == QuicVersion::MVFST_EXPERIMENTAL));
  }
  const TransportSettings& QuicTransportBase::getTransportSettings() const {
  