deferToHttpOverrides property
When true (the default) and a TracedHttpOverrides has been
installed in this isolate, this interceptor records nothing:
Dio's default adapter routes through dart:io HttpClient, so
the overrides layer already captures the call and recording
here would produce a duplicate timeline entry.
Set to false when Dio uses a custom HttpClientAdapter
(mocks, http2) that bypasses dart:io — in that case the
overrides layer never sees the request and this interceptor
must record it.
Implementation
final bool deferToHttpOverrides;