tidb-lightning need to support fields starting with `_` when the import file type is parquet

[glkappe]

Bug Report

Please answer these questions before submitting your issue. Thanks!

tidb-lightning need to support fields starting with _ when the import file type is parquet

1. Minimal reproduce step (Required)

1. fields starting with _ of parquet
2. use tidb-lightning import

2. What did you expect to see? (Required)

import success

3. What did you see instead (Required)

Root cause: PreCheckFailed: TiDB schema `test`.`tbl` doesn't have column pargo_prefix__abc, please check table schema 

4. What is your TiDB version? (Required)

tidb、tidb-lightning ：v6.1.0

[D3Hunter]

duplicate with https://github.com/pingcap/tidb/issues/36981

[glkappe]

ok i wiil close this issue

[D3Hunter]

ok i wiil close this issue

will close automatically after pr merged

[D3Hunter]

https://github.com/xitongsys/parquet-go/blob/7a9be66324ca29f6ce14c66b239ba79c4896bf25/common/common.go#L603