[Fix] tskv file system do not use append flag; call WalWriter::close() when a writer roll to old

[zipper-meng]

Required checklist

• Sample config files updated (config,meta/config and default config)
• If there are user-facing changes, the documentation needs to be updated prior to approving the PR( Link )
• If there are any breaking changes to public APIs, please add the api change label.
• Signed CLA (if not already signed)

Which issue does this PR close?

Related #.

Rationale for this change

1. file_manager::open_create_file() now don't use append mode, because on Windows11 we can't call file.set_len() on a file which opened with append mode.
2. Now there can be multi opened but finished WAL files in WalManager do not have footer, to fix that, split WalWriter::write_footer() from WalWriter::close(), call wirte_footer() when a WAL file is finished.

Are there any user-facing changes?

[zipper-meng]

Still need some improves:

1. WalWriter needs to be closed when it's old, only write_footer() is not enough, so do not split method write_footer(), and call close() is right.
2. File handle shared with WalReader must not be closed when WalWriter to be closed.