core/rawdb: check pruning tail in HasBody and HasReceipts (#33747)

### Problem

`HasBody` and `HasReceipts` returned `true` for pruned blocks because
they only checked `isCanon()` which verifies the hash table — but
hash/header tables have `prunable: false` while body/receipt tables have
`prunable: true`.

After `TruncateTail()`, hashes still exist but bodies/receipts are gone.
This caused inconsistency: `HasBody()` returns `true`, but `ReadBody()`
returns `nil`.

### Changes

Both functions now check `db.Tail()` when the block is in ancient store.
If `number < tail`, the data has been pruned and the function correctly
returns `false`.

This aligns `HasBody`/`HasReceipts` behavior with
`ReadBody`/`ReadReceipts` and fixes potential issues in
`skeleton.linked()` which relies on these checks during sync.

core/rawdb/accessors_chain.go

@@ -424,7 +424,13 @@ func WriteBodyRLP(db ethdb.KeyValueWriter, hash common.Hash, number uint64, rlp
 // HasBody verifies the existence of a block body corresponding to the hash.
 func HasBody(db ethdb.Reader, hash common.Hash, number uint64) bool {
 	if isCanon(db, number, hash) {
-		return true
+		// Block is in ancient store, but bodies can be pruned.
+		// Check if the block number is above the pruning tail.
+		tail, _ := db.Tail()
+		if number >= tail {
+			return true
+		}
+		return false
 	}
 	if has, err := db.Has(blockBodyKey(number, hash)); !has || err != nil {
 		return false
@@ -466,7 +472,13 @@ func DeleteBody(db ethdb.KeyValueWriter, hash common.Hash, number uint64) {
 // to a block.
 func HasReceipts(db ethdb.Reader, hash common.Hash, number uint64) bool {
 	if isCanon(db, number, hash) {
-		return true
+		// Block is in ancient store, but receipts can be pruned.
+		// Check if the block number is above the pruning tail.
+		tail, _ := db.Tail()
+		if number >= tail {
+			return true
+		}
+		return false
 	}
 	if has, err := db.Has(blockReceiptsKey(number, hash)); !has || err != nil {
 		return false