fix: follow-up fixes for detached pydantic.BaseModel schemas

[alvarobartt]

Description

This PR contains some bug-fixes and improvements as a follow up for #3784.

• FeedbackDataset from the Hugging Face Hub fails if exported with an outdated version as it still contained the ID for some columns
• Adding records via add_records over an existing FeedbackDataset in Argilla i.e. a RemoteFeedbackDataset fails because the _fields_schema is not defined
• Shared attribute initialization in FeedbackDatasetBase, but move local validation to FeedbackDataset
• Extend supported type-hints in generate_pydantic_schema function
• Fix from_huggingface to be backwards compatible with previously uploaded FeedbackDataset datasets to the Hugging Face Hub (from Argilla v1.8.0)

Kudos @frascuchon for detecting and reporting the bugs tackled in this PR!

Type of change

• Bug fix (non-breaking change which fixes an issue)
• Improvement (change adding some improvement to an existing functionality)

How Has This Been Tested

• Run rg.FeedbackDataset.from_huggingface("argilla/oasst_response_quality", split="train")
• Add outdated/deprecated configuration files to check that DatasetConfig.from_yaml works as intended
• Add integration tests to ensure that adding a record to an existing FeedbackDataset in Argilla works as expected

Checklist

• I added relevant documentation
• follows the style guidelines of this project
• I did a self-review of my code
• I made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• I filled out the contributor form (see text above)
• I have added relevant notes to the CHANGELOG.md file (See https://keepachangelog.com/)