Fix INSERT IGNORE test expecting old enum error format

- Updated issue 8611 test to expect ErrDataTruncatedForColumnAtRow instead of ErrDataTruncatedForColumn
- Test was failing because it expected the old error type without row information
- All INSERT IGNORE tests now pass with the new MySQL-compliant error format

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: elianddb

enginetest/queries/insert_queries.go

@@ -2836,7 +2836,7 @@ var InsertIgnoreScripts = []ScriptTest{
 		Assertions: []ScriptTestAssertion{
 			{
 				Query:       "insert into test_table values (1, 'invalid'), (2, 'comparative politics'), (3, null)",
-				ExpectedErr: types.ErrDataTruncatedForColumn,
+				ExpectedErr: types.ErrDataTruncatedForColumnAtRow,
 			},
 			{
 				Query:    "insert ignore into test_table values (1, 'invalid'), (2, 'bye'), (3, null)",