Negative Response Caching with Proxy.config.http.negative_caching_lifetime vs TTL-in-Cache

[incheoloh]

cache.config

url_regex=.*    ttl-in-cache=20s

records.yaml

records:
  http:
    negative_caching_enabled: 1
    negative_caching_lifetime: 5

ttl-in-cache in cache.config sets a default TTL, applying this duration to cached responses regardless of the response code.
proxy.config.http.negative_caching_lifetime in records.yaml is intended to set the TTL for negative responses (e.g., 403, 404). However, if ttl-in-cache is defined in cache.config, it takes precedence and applies a TTL of 20 seconds to all responses, including 403.

Is there any way to use the value set by proxy.config.http.negative_caching_lifetime instead of the ttl set by ttl-in-cache for negative responses?