IndexSchema constructor and validation have conflicting type expectations

[drcrallen]

redis-vl-python/redisvl/schema/schema.py

Line 146 in 04736f1

fields: Dict[str, BaseField] = {}

expects fields: Dict[str, BaseField] = {}

but

redis-vl-python/redisvl/schema/schema.py

Lines 182 to 186 in 04736f1

	input_fields = values.get("fields", [])
	prepared_fields: Dict[str, BaseField] = {}
	# Handle old fields format temporarily
	if isinstance(input_fields, dict):
	raise ValueError("New schema format introduced; please update schema spec.")

will throw an error if fields is a dict.