message: Add test fn to force switch block off
diff: @@ -1633,6 +1633,14 @@ impl Block {
  self
  }
  + /// Overrides the era end of a block with a `None`, making it a non-switch block.
  + #[cfg(test)]
  + pub fn disable_switch_block(&mut self, verifiable_chunked_hash_activation: EraId) -> &mut Self {
  + let _ = self.header.era_end.take();
  + self.hash = self.header.hash(verifiable_chunked_hash_activation);
  + self
  + }
  +
  /// Generates a random instance using a `TestRng`.
  #[cfg(test)]
  pub fn random(rng: &mut TestRng) -> Self {
  