[FLINK-37012][transform] Fix exception caused by metadataColumns causing argument type mismatch #67

Job	Run time
License Check	3m 36s
Migration Tests / data_stream_migration_test (8, 1.19.1)	11m 49s
Migration Tests / migration_test_ut (8, 1.19.1)	5m 11s
Migration Tests / data_stream_migration_test (8, 1.20.0)	11m 43s
Migration Tests / migration_test_ut (8, 1.20.0)	4m 53s
Migration Tests / pipeline_migration_test (8, 1.19.1)	7m 56s
Migration Tests / pipeline_migration_test (8, 1.20.0)	6m 44s
Source E2E Tests / compile_and_test (8, 1.19.1)	25m 21s
Source E2E Tests / compile_and_test (8, 1.20.0)	26m 30s
Pipeline E2E Tests (1-Parallelism) / compile_and_test (8, 1.19.1)	31m 5s
Pipeline E2E Tests (4-Parallelism) / compile_and_test (8, 1.19.1)	30m 46s
Pipeline E2E Tests (1-Parallelism) / compile_and_test (8, 1.20.0)	31m 14s
Pipeline E2E Tests (4-Parallelism) / compile_and_test (8, 1.20.0)	29m 42s
Unit Tests (core) / compile_and_test (8, generic)	30m 35s
Unit Tests (db2) / compile_and_test (8, generic)	20m 21s
Unit Tests (mongodb6) / compile_and_test (8, generic)	36m 32s
Unit Tests (mongodb7) / compile_and_test (8, generic)	33m 40s
Unit Tests (mysql) / compile_and_test (8, generic)	38m 45s
Unit Tests (oceanbase) / compile_and_test (8, generic)	5m 59s
Unit Tests (pipeline_connectors) / compile_and_test (8, generic)	18m 32s
Unit Tests (oracle) / compile_and_test (8, generic)	30m 45s
Unit Tests (postgres) / compile_and_test (8, generic)	24m 59s
Unit Tests (sqlserver) / compile_and_test (8, generic)	13m 15s
Unit Tests (tidb) / compile_and_test (8, generic)	3m 13s
Unit Tests (vitess) / compile_and_test (8, generic)	4m 3s
	8h 7m 9s

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