Run Nextclade for NA

Adds NA to list of segments, since we want to know the subclade
annotations for NA as well as HA and use these data to estimate
frequencies.

profiles/nextclade.yaml

@@ -6,6 +6,7 @@ s3_dst: "s3://nextstrain-data-private/files/workflows/seasonal-flu"
 
 segments:
   - ha
+  - na
 
 builds:
   h1n1pdm: