Fix no-target DAG regression when QC module is enabled

tests/configs/local_genome_ref_name_underscore.yaml

@@ -0,0 +1,63 @@
+samples: "samples.csv"
+
+reference:
+  name: "Test_Ref"
+  source: "tests/data/reference/Test_Ref.fa" # Can be a refseq/genbank accession, url, or path
+
+variant_calling:
+  expected_coverage: "low" # low | high | auto (future)
+  tool: "gatk"
+  ploidy: 2
+  gatk:
+    het_prior: 0.005
+    concat_batch_size: 5
+    concat_max_rounds: 20
+  sentieon:
+    license: ""
+  bcftools:
+    min_mapq: 20
+    min_baseq: 20
+    max_depth: 250
+  deepvariant:
+    model_type: "WGS"
+    num_shards: 8
+  parabricks:
+    container_image: "/tmp/parabricks.sif"
+    num_gpus: 1
+    num_cpu_threads: 4
+    extra_args: ""
+
+intervals:
+  enabled: true
+  min_nmer: 500
+  num_gvcf_intervals: 50
+  db_scatter_factor: 0.15
+
+callable_sites:
+  generate_bed_file: true
+  coverage:
+    enabled: true
+    fraction: 1.0
+    min_coverage: auto
+    max_coverage: auto
+    merge_distance: 100
+  mappability:
+    enabled: true
+    min_score: 1
+    kmer: 150
+    merge_distance: 100
+
+modules:
+  qc:
+    enabled: true
+    clusters: 3
+    min_depth: 2
+    google_api_key: ""
+    exclude_scaffolds: ""
+  postprocess:
+    enabled: false
+    filtering:
+      contig_size: 10000
+      maf: 0.01
+      missingness: 0.75
+      exclude_scaffolds: "mtDNA,Y"