message: Fix test by preventing the creation of two switch blocks in the same era
diff: @@ -1981,7 +1981,14 @@ fn should_restrict_returned_blocks() {
  // Create the following disjoint sequences: 1-2 4-5
  [1, 2, 4, 5].iter().for_each(|height| {
  - let (block, _) = random_block_at_height(&mut harness.rng, *height, Block::random_v1);
  + let block = Block::random_with_specifics(
  + &mut harness.rng,
  + EraId::from(1),
  + *height,
  + ProtocolVersion::from_parts(1, 5, 0),
  + false,
  + verifiable_chunked_hash_activation,
  + );
  storage.storage.write_block(&block).unwrap();
  });
  // The available range is 4-5.
  