fix: clean up racy tests

web3.js/src/connection.js

@@ -2919,7 +2919,10 @@ export class Connection {
     const signData = transaction.serializeMessage();
     const wireTransaction = transaction._serialize(signData);
     const encodedTransaction = wireTransaction.toString('base64');
-    const config: any = {encoding: 'base64'};
+    const config: any = {
+      encoding: 'base64',
+      commitment: this.commitment,
+    };
     const args = [encodedTransaction, config];
 
     if (signers) {

web3.js/src/loader.js

@@ -128,7 +128,6 @@ export class Loader {
           [payer, program],
           {
             commitment: 'singleGossip',
-            skipPreflight: true,
           },
         );
       }
@@ -170,7 +169,6 @@ export class Loader {
       transactions.push(
         sendAndConfirmTransaction(connection, transaction, [payer, program], {
           commitment: 'singleGossip',
-          skipPreflight: true,
         }),
       );
 
@@ -211,7 +209,6 @@ export class Loader {
         [payer, program],
         {
           commitment: 'singleGossip',
-          skipPreflight: true,
         },
       );
     }