se-wgs-variation: convert duplicate-keyed asserts to list form

YAML collapses duplicate mapping keys (last wins), so repeated has_text entries only ran the last assertion per type. Convert to list form so each runs.

Isolated from the passing-subset PR: this workflow's test currently ERRORS for a reason unrelated to this change — bcftools concat segfaults (SIGSEGV, rc -11) inside lofreq_call's biocontainer while combining empty VCF chunks. IWC only tests changed workflows, so touching this file is what surfaced the pre-existing crash. Kept separate so it doesn't block the genuinely-green set.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: jmchilton

workflows/sars-cov-2-variant-calling/sars-cov-2-se-illumina-wgs-variant-calling/se-wgs-variation-tests.yml

@@ -16,11 +16,11 @@
       element_tests:
         SRR11605118:
           asserts:
-            has_line:
+            - that: has_line
               line: "##fileformat=VCFv4.0"
-            has_line:
+            - that: has_line
               line: "#CHROM	POS	ID	REF	ALT	QUAL	FILTER	INFO"
-            has_text_matching:
+            - that: has_text_matching
               expression: "NC_045512.2\t241\t.\tC\tT\t[0-9.]*\tPASS"
-            has_text_matching:
+            - that: has_text_matching
               expression: "NC_045512.2\t16111\t.\tC\tT\t[0-9.]*\tPASS\tDP=[0-9]*;AF=0.[89][0-9]*;SB=0;DP4=[0-9]*,[0-9]*,[0-9]*,[0-9]*;EFF=SYNONYMOUS_CODING\\(LOW|SILENT|Cta/Tta|L5283|7096|ORF1ab|protein_coding|CODING|GU280_gp01|2|T\\),SYNONYMOUS_CODING\\(LOW|SILENT|Cta/Tta|L891|931|ORF1ab|protein_coding|CODING|YP_009725307.1|2|T|WARNING_TRANSCRIPT_NO_START_CODON\\)"