Feature/fix get all

[emrgnt-cmplxty]

	🚀 This PR description was created by Ellipsis for commit be51194.

Summary:

The pull request modifies the get_all_unique_values function in the PGVectorDB class to use the query method of the collection object to retrieve all records, extract unique values from the metadata_field, and return them as a list.

Key points:

• Modified the get_all_unique_values function in the PGVectorDB class in /r2r/vector_dbs/pg_vector/base.py.
• The function now uses the query method of the collection object to retrieve all records.
• An empty vector is passed as the data argument to the query method.
• The limit argument is removed to retrieve all records.
• The unique values are extracted from the metadata_field of the records and returned as a list.

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[ellipsis-dev]

❌ Changes requested.

• Reviewed the entire pull request up to be51194
• Looked at 38 lines of code in 1 files
• Took 50 seconds to review

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Workflow ID: wflow_B5Z4ZMmKCg4NwwCL

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[ellipsis-dev]

Consider using pagination or limiting the number of records retrieved at once to avoid potential performance issues with large collections. Also, avoid using mutable default arguments. Instead, use None and set the default in the function body.

Suggested change

	def get_all_unique_values(self, metadata_field: str, filters: dict = {}) -> list:
	def get_all_unique_values(self, metadata_field: str, filters: dict = None) -> list:
	if filters is None:
	filters = {}