[FLINK-39418] Fix decimal truncation when precision / scale is over 19 #2405

Job	Run time
License Check	4m 26s
Common Unit Tests / test (11, generic, core)	13m 35s
Common Unit Tests 2.x / test (11, 2.2.0, core)	14m 13s
Source Unit Tests 2.x / test (11, 2.2.0, db2, mongodb)	35m 5s
Source Unit Tests 2.x / test (11, 2.2.0, postgres-source, oceanbase-source, tidb, vitess)	24m 7s
Source Unit Tests 2.x / test (11, 2.2.0, oracle, sqlserver)	40m 0s
Source Unit Tests / test (11, generic, mysql-source)	40m 43s
Source Unit Tests / test (11, generic, db2, mongodb)	40m 40s
Source Unit Tests 2.x / test (11, 2.2.0, mysql-source)	40m 38s
Pipeline Connectors Unit Tests 2.x / test (11, 2.2.0, doris, elasticsearch, fluss, iceberg, kafka, maxcompute, mysql-pipeline, oceanba...	40m 39s
Pipeline Unit Tests / test (11, generic, doris, elasticsearch, fluss, hudi, iceberg, kafka, maxcompute, mysql-pipeline,...	40m 38s
Source Unit Tests / test (11, generic, postgres-source, oceanbase-source, tidb, vitess)	36m 53s
Source Unit Tests / test (11, generic, oracle, sqlserver)	40m 38s
Source E2E Tests / test (11, 1.20.3, source_e2e)	23m 10s
Pipeline E2E Tests 2.x (1-Parallelism) / test (11, 2.2.0, pipeline_e2e)	40m 39s
Pipeline E2E Tests 2.x (4-Parallelism) / test (11, 2.2.0, pipeline_e2e)	40m 38s
Pipeline E2E Tests (1-Parallelism) / test (11, 1.20.3, pipeline_e2e)	40m 43s
Pipeline E2E Tests (4-Parallelism) / test (11, 1.20.3, pipeline_e2e)	40m 40s
	9h 58m 5s

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