Sanitize preflight (bp #11373) (#11376)

* Add failing test for unsane tx in RPC preflight

(cherry picked from commit e25846e1ad)

* Add From for SanitizeError > TransactionError

(cherry picked from commit 3f73affb2e)

* Sanitize transactions during RPC preflight test

(cherry picked from commit 29b3265dc7)

* Harden RPC preflight test inputs

(cherry picked from commit 14339dec0a)

Co-authored-by: Trent Nelson <trent@solana.com>

runtime/src/accounts.rs

@@ -629,8 +629,7 @@ impl Accounts {
         use solana_sdk::sanitize::Sanitize;
         let keys: Vec<Result<_>> = OrderedIterator::new(txs, txs_iteration_order)
             .map(|tx| {
-                tx.sanitize()
-                    .map_err(|_| TransactionError::SanitizeFailure)?;
+                tx.sanitize().map_err(TransactionError::from)?;
 
                 if Self::has_duplicates(&tx.message.account_keys) {
                     return Err(TransactionError::AccountLoadedTwice);