Replace command.applyTo() with inlined builder operations

These are much easier to understand.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=137446273

java/google/registry/flows/host/HostCreateFlow.java

@@ -101,11 +101,11 @@ public final class HostCreateFlow extends Flow implements TransactionalFlow {
           ? new SubordinateHostMustHaveIpException()
           : new UnexpectedExternalHostIpException();
     }
-    Builder builder = new Builder();
-    command.applyTo(builder);
-    HostResource newHost = builder
+    HostResource newHost = new Builder()
         .setCreationClientId(clientId)
         .setCurrentSponsorClientId(clientId)
+        .setFullyQualifiedHostName(targetId)
+        .setInetAddresses(command.getInetAddresses())
         .setRepoId(createContactHostRoid(ObjectifyService.allocateId()))
         .setSuperordinateDomain(
             superordinateDomain.isPresent() ? Key.create(superordinateDomain.get()) : null)