feat(sink): support deafult aws credentials for deltalake

[xxhZs]

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What's changed and what's your intention?

#18814
Because delta rs doesn't support sdk config, you need to extract the hashmap

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[hzxa21]

Do we have any CI test or manual test to verify this PR works?

[xxhZs]

Do we have any CI test or manual test to verify this PR works?

manual test to verify this PR works