<!-- Describe your changes in detail -->
Add Payment Method List's required field configuration to v2 in toml format
To implement this **search_filter** feature, you'll need to modify these architectural layers:


**1. Configuration Files**
   - `config/payment_required_fields_v2.toml`
{"pr_number": 8074, "pr_title": "feat(required_fields): add configs for v2 payment method list", "merged_at": "2025-05-27T07:22:39Z", "intent": {"feature_type": "search_filter", "action": "add_feature", "entities": ["customer", "payment", "user"]}, "hierarchy": {"config": ["config/payment_required_fields_v2.toml"]}, "change_types": {}, "has_identifier_data": false, "commits_matched": 0, "match_method": "none"}