fix(iceberg): Handling options like "s3.region"

[Xuanwo]

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Summary

Our parser doesn't allow users to write s3.region in options. Instead, users must use
"s3.region", but it's stored as is which makes the behavior in wrong. We need to remove the quotes here.

We only do this while building catalog so this won't affect existing catalogs.

Tests

• Unit Test
• Logic Test
• Benchmark Test
• No Test - Explain why

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 

[what-the-diff]

PR Summary

• Removal of Quotation Marks in Catalog Configurations
  The update introduces a change to the Iceberg Catalog system. In existing setups, certain options within the properties (props) field of Hive Metastore Catalog Configuration (HmsCatalogConfig) and REST Catalog Configuration (RestCatalogConfig) are surrounded by quotes. This change eliminates these quotation marks to simplify configurations and reduce potential parsing errors.

• Conversion of props field values into Map
  The code update also transforms the values in the props field into a Map data structure. This means the system discards unnecessary quotation marks, both around the keys and values, resulting in a cleaner, easier-to-use data format. This can improve workflow efficiency and reduce potential misunderstandings caused by redundant symbols.