Resolve a dnsProvider name (as passed to
buildAcmeDnsPolicy.dnsProvider) to its typed provider config,
via the same normalisation buildAcmeDnsPolicy itself uses.
Unknown provider names return { envVars: [] } — no typed builder
exists yet, so the caller must supply providerConfig themselves (e.g.
via the raw providerConfig passthrough on buildAcmeDnsPolicy).
Resolve a
dnsProvidername (as passed to buildAcmeDnsPolicy.dnsProvider) to its typed provider config, via the same normalisationbuildAcmeDnsPolicyitself uses.Unknown provider names return
{ envVars: [] }— no typed builder exists yet, so the caller must supplyproviderConfigthemselves (e.g. via the rawproviderConfigpassthrough onbuildAcmeDnsPolicy).