fix(substrate/client): cast MAJOR_SYNC_BLOCKS to usize (#8094)

Rustc started complaining from some versions onward when calling `into`
on `MAJOR_SYNC_BLOCKS`.

Not sure what's the version from which it fails, but it does. I'm on
1.85.1, it did fail on 1.82 as well.

---------

Co-authored-by: Iulian Barbu <[email protected]>

Author: saiintbrisson

substrate/client/network/sync/src/strategy/chain_sync.rs

@@ -1023,7 +1023,7 @@ where
 				// If there are more than `MAJOR_SYNC_BLOCKS` in the import queue then we have
 				// enough to do in the import queue that it's not worth kicking off
 				// an ancestor search, which is what we do in the next match case below.
-				if self.queue_blocks.len() > MAJOR_SYNC_BLOCKS.into() {
+				if self.queue_blocks.len() > MAJOR_SYNC_BLOCKS as usize {
 					debug!(
 						target: LOG_TARGET,
 						"New peer {} with unknown best hash {} ({}), assuming common block.",
@@ -1839,7 +1839,7 @@ where
 					MAX_BLOCKS_TO_LOOK_BACKWARDS.into() &&
 					best_queued < peer.best_number &&
 					peer.common_number < last_finalized &&
-					queue_blocks.len() <= MAJOR_SYNC_BLOCKS.into()
+					queue_blocks.len() <= MAJOR_SYNC_BLOCKS as usize
 				{
 					trace!(
 						target: LOG_TARGET,