YAML arrays in LinkML annotations must be quoted strings to ensure
proper parsing. This change quotes all custodian_types annotations
from the raw array format to quoted string format.
Before: custodian_types: ["A", "G"]
After: custodian_types: '["A", "G"]'
Affected: 50+ class files in modules/classes/
Also updates: manifest.json, 01_custodian_name_modular.yaml