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663638d6 - community[minor]: [SharePointLoader] Load extended metadata for the root folder (#24872)

community[minor]: [SharePointLoader] Load extended metadata for the root folder (#24872) - **Title:** [SharePointLoader] Load extended metadata for the root folder - **Description:** - Ensure extended metadata loads correctly for the root folder. - Cleanup: Refactor SharePointLoader to remove unused fields(`file_id` & `site_id`). - **Dependencies:** NA - **Add tests and docs:** NA