add mysql dialect

Author: elianddb

enginetest/queries/create_table_queries.go

@@ -330,6 +330,7 @@ var CreateTableScriptTests = []ScriptTest{
 	{
 		// https://github.com/dolthub/dolt/issues/9316
 		Name:         "CREATE TABLE with constraints AS SELECT osticket repro",
+		Dialect:      "mysql",
 		SkipPrepared: true, // SHOW KEYS with WHERE clause doesn't work with prepared statements
 		SetUpScript: []string{
 			"CREATE TABLE ost_form_entry (id INT PRIMARY KEY, object_id INT, object_type VARCHAR(1))",
@@ -372,6 +373,7 @@ var CreateTableScriptTests = []ScriptTest{
 	{
 		// https://github.com/dolthub/dolt/issues/9316
 		Name:         "CREATE TABLE with constraints AS SELECT",
+		Dialect:      "mysql",
 		SkipPrepared: true,
 		SetUpScript: []string{
 			"CREATE TABLE t1 (a int not null, b varchar(10))",