perf: decrease sparse trie task updates batch size

crates/engine/tree/src/tree/payload_processor/sparse_trie.rs

@@ -36,7 +36,7 @@ use revm_primitives::{hash_map::Entry, B256Map};
 use tracing::{debug, debug_span, error, instrument, trace_span};
 
 /// Maximum number of pending/prewarm updates that we accumulate in memory before actually applying.
-const MAX_PENDING_UPDATES: usize = 100;
+const MAX_PENDING_UPDATES: usize = 50;
 
 /// Sparse trie task implementation that uses in-memory sparse trie data to schedule proof fetching.
 pub(super) struct SparseTrieCacheTask<A = ParallelSparseTrie, S = ParallelSparseTrie> {