fix(mssql/transaction): name is too long when using more than 9 savepoints (#8717)

lib/transaction.js

@@ -40,7 +40,7 @@ class Transaction {
     if (this.parent) {
       this.id = this.parent.id;
       this.parent.savepoints.push(this);
-      this.name = this.id + '-savepoint-' + this.parent.savepoints.length;
+      this.name = this.id + '-sp-' + this.parent.savepoints.length;
     } else {
       this.id = this.name = generateTransactionId();
     }