fix(binder): fix external location table list check end with delimiter '/'

[BohuTANG]

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Summary

When creating external location tables, Databend checks list privileges during binding.

AWS S3 Express requires paths to end with a delimiter (/), otherwise it fails:

This PR adds a / to the end of check keys, maintaining compatibility with the existing implementation.

Tests

• Unit Test
• Logic Test
• Benchmark Test
• No Test - Exists tests in PR: https://github.com/databendlabs/databend/pull/16315/files#diff-b0b664a7a1f545861eb9c295ec279faaf6387b855f29e1d0cac371fd0daff021

Type of change

• Bug Fix (non-breaking change which fixes an issue)
• New Feature (non-breaking change which adds functionality)
• Breaking Change (fix or feature that could cause existing functionality not to work as expected)
• Documentation Update
• Refactoring
• Performance Improvement
• Other (please describe):

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This change is 

[github-actions]

Docker Image for PR

• tag: pr-17890-5e70049-1746604766

note: this image tag is only available for internal use.

[BohuTANG]

This PR waiting for opendal to handle with list local fs file return empty instead of error.