message: fix and rename `have_block`
diff: @@ -61,12 +61,12 @@ impl StartingWith {
  }
  }
  - pub(crate) fn have_block(&self) -> bool {
  + pub(crate) fn should_fetch_execution_state(&self) -> bool {
  match self {
  - StartingWith::BlockIdentifier(..) => true,
  - StartingWith::ExecutableBlock(..) => true,
  - StartingWith::SyncedBlockIdentifier(..) => true,
  - StartingWith::Hash(_) => false,
  + StartingWith::ExecutableBlock(..) => false,
  + StartingWith::BlockIdentifier(..)
  + | StartingWith::SyncedBlockIdentifier(..)
  + | StartingWith::Hash(_) => true,
  }
  }
  }
  @@ -146,7 +146,7 @@ impl BlockAccumulator {
  // |------------- future chain ----?ATTEMPT_EXECUTION_THRESHOLD>
  // AFTER the f-seq cant help you, SYNC-all-state
  // |------------- future chain ------------------------> ?
  - let should_fetch_execution_state = false == starting_with.have_block();
  + let should_fetch_execution_state = starting_with.should_fetch_execution_state();
  let maybe_highest_usable_block_height = self.highest_usable_block_height();
  