AWS: add skip name validation to isValidIdentifier

[xingfanx]

augment to: #5041

integration test passed

> Task :iceberg-aws:integrationTest
[Test worker] INFO org.apache.iceberg.aws.glue.GlueCatalog - Created namespace: dd-dd
[Test worker] INFO org.apache.iceberg.BaseMetastoreCatalog - Table properties set at catalog level through catalog properties: {}
[Test worker] INFO org.apache.iceberg.BaseMetastoreCatalog - Table properties enforced at catalog level through catalog properties: {}
[Test worker] INFO org.apache.iceberg.BaseMetastoreTableOperations - Successfully committed to table glue.dd-dd.cc-cc in 1992 ms
BUILD SUCCESSFUL in 21s
14 actionable tasks: 1 executed, 13 up-to-date
2:54:01 PM: Execution finished ':iceberg-aws:integrationTest --tests "org.apache.iceberg.aws.glue.TestGlueCatalogTable.testCommitTableSkipNameValidation"'.

[jackye1995]

Overall looks good! Just to avoid we miss any additional edge case, can you add an integration test just to test end to end?

[jackye1995]

thanks for the fix!